In a low-key Givenchy hoody, actor Idris Elba joined forces with actress Elle Fanning in a blue Valentino gown to buck this week's trend and bring some A-list star power to Paris Fashion Week on Sunday.

Models wear creations for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Models wear creations for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

While designer Clare Waight Keller showed a brooding and gritty collection for Givenchy, with big fur coats with stylish markings, Valentino went for flowers and romance in its looks. And after an incredible 90-year hiatus, the famed house of designer Paul Poiret — who freed women from corsets — returned to the Paris runways.

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Models wear creations for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

In a low-key Givenchy hoody, actor Idris Elba joined forces with actress Elle Fanning in a blue Valentino gown to buck this week's trend and bring some A-list star power to Paris Fashion Week on Sunday.

Models wear creations for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

While designer Clare Waight Keller showed a brooding and gritty collection for Givenchy, with big fur coats with stylish markings, Valentino went for flowers and romance in its looks. And after an incredible 90-year hiatus, the famed house of designer Paul Poiret — who freed women from corsets — returned to the Paris runways.

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

That revelation was brought into focus at Sunday's strong collection for Givenchy in which the British designer shed her usual politeness and delved deep into the night.

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

This season sees "the air thick with sleaze and danger," said the house.

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A spattering of menswear styles was a nice complement to the urban grit — including an oversize white coat and marl jacket underneath that captured the heady days of the Rolling Stones' guitarist Keith Richards.

Models wear creations for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

As many of his Hollywood peers were gearing up for the Academy Awards in Los Angeles, Elba joined fashion insiders in Paris to see the latest chapter of Waight Keller's evolving vision for the house a full year into her creative stewardship.

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

"I'm excited about it," Elba, a rare face at Fashion Week shows, told The Associated Press.

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

"The next thing that comes out is a thing called "In The Long Run," which is a TV show about my life," he said.

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

THE RETURN OF POIRET

ModelS wear creations for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

ModelS wear creations for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

After an incredible 90-year hiatus, the famed house of iconic designer Paul Poiret — who freed women from corsets — has returned to the Paris runways.

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

It's an incredible comeback for a design house considered to be among the most influential of the 20th century.

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

Paris-born Poiret's house collapsed in the 1920s after the tumult of World War I changed the fashion business landscape — but his legacy lived on.

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

ModelS wear creations for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

Poiret is credited with the revolutionary development of draping in a departure from traditional tailoring and pattern-making, and is closely associated with the invention of the hobble skirt and harem pants.

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

Poiret's relaunch is one of a number of revamped heritage houses in recent years including Vionnet and Schiaparelli.

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

Such a grand come back demands an equally grand display. Guests were treated to a dramatic "couture" presentation inside the historic nave of the westerly part of the former Louvre Palace.

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

Beijing-born designer Yiqing Yin acknowledges applause after the presentation of Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

YIQING YIN AT POIRET

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

It was a resounding success.

Designer Pierpaolo Piccioli accepts applause after Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

In a literal sense, there also was the sweltering heat owing to the conservatory show venue, which had giant tropical green plants lining the sides of the runway. The decor cross-pollinated into the clothes as designer Pierpaolo Piccioli took an unusually minimalist turn.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Blooms were a big theme.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Beginning in monochrome and moving into flashes of deep sunshine, pale yellow, pea green and Cerulean blue, a semicircle "frill" motif adorned hems and went down the front in one loose white gown. It cleverly evoked the shell shapes ubiquitous on the barriers at the sides of flower beds.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Sometimes Piccioli ventured creatively too far into his garden: one flower-hood look with an all-encompassing bloom print cut a rather wacky shape.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

The best look was in monochrome — a fringed coat with dramatic black hood in soft leather.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

With a "VLT" logo handbag and in a bright blue pleated shoulder-less Valentino gown that matched her eyes, the 24-year-old actress said she was taking it easy this year with the success of the historic crime drama "The Alienist," in which she stars and is currently airing in the US.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

"I'm just here to attend this show," she said.

Models wear creations for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

"I've been lucky to come to the shows before. I love Valentino. It's such a classic, timeless brand," she said.

Models wear creations for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Models wear creations for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Models wear creations for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Models wear creations for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Actress Kristin Scott Thomas poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Actress Kristin Scott Thomas poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Actress Dakota Fanning poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Actress Dakota Fanning poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Model Karlie Kloss poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Model Karlie Kloss poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Actress Dakota Fanning poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Actress Dakota Fanning poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Here are some highlights of Sunday's fall-winter collections, including Givenchy, Valentino and the relaunch of Poiret.

GIVENCHY'S DARK GLAMOUR

Beyond designer Clare Waight Keller's gentle manner lies a powerful creative psyche that's dark, brooding and gritty.

Models wear creations for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Models wear creations for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

That revelation was brought into focus at Sunday's strong collection for Givenchy in which the British designer shed her usual politeness and delved deep into the night.

Big pimp-style fur coats with stylish statement markings opened the collection alongside unfurling cuffed boots in soft leather that evoked the feeling of being hurriedly put on.

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

This season sees "the air thick with sleaze and danger," said the house.

The sharp-edged styles — which included big floppy leather belts in brown, black and tan, houndstooth suits with razor shoulders, as well as zebra and leopard prints — set the time dial to the late '80s.

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A spattering of menswear styles was a nice complement to the urban grit — including an oversize white coat and marl jacket underneath that captured the heady days of the Rolling Stones' guitarist Keith Richards.

The collection shows that Waight Keller is growing in confidence at the storied label.

IDRIS ELBA AT GIVENCHY

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

As many of his Hollywood peers were gearing up for the Academy Awards in Los Angeles, Elba joined fashion insiders in Paris to see the latest chapter of Waight Keller's evolving vision for the house a full year into her creative stewardship.

Models wear creations for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Models wear creations for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

"I'm excited about it," Elba, a rare face at Fashion Week shows, told The Associated Press.

Acting is still the 45-year-old star's main preoccupation and he took the opportunity to talk about his latest projects. Currently filming the latest season of British series "Luther," for which he won a Golden Globe, Elba is trying his hand at a new skill: comedy.

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

"The next thing that comes out is a thing called "In The Long Run," which is a TV show about my life," he said.

He acknowledged "it's my first time jumping into comedy" — but said "I'm loving it" so far.

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Givenchy ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

THE RETURN OF POIRET

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

ModelS wear creations for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

ModelS wear creations for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

After an incredible 90-year hiatus, the famed house of iconic designer Paul Poiret — who freed women from corsets — has returned to the Paris runways.

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

It's an incredible comeback for a design house considered to be among the most influential of the 20th century.

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

Paris-born Poiret's house collapsed in the 1920s after the tumult of World War I changed the fashion business landscape — but his legacy lived on.

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

Poiret is credited with the revolutionary development of draping in a departure from traditional tailoring and pattern-making, and is closely associated with the invention of the hobble skirt and harem pants.

ModelS wear creations for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

ModelS wear creations for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

Poiret's relaunch is one of a number of revamped heritage houses in recent years including Vionnet and Schiaparelli.

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

Such a grand come back demands an equally grand display. Guests were treated to a dramatic "couture" presentation inside the historic nave of the westerly part of the former Louvre Palace.

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

A model wears a creation for Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

YIQING YIN AT POIRET

The couturiere Yiqing Yin unveiled her debut ready-to-wear collection for the house famous for its loose, fluid silhouettes.

Beijing-born designer Yiqing Yin acknowledges applause after the presentation of Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

Beijing-born designer Yiqing Yin acknowledges applause after the presentation of Poiret ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Kamil Zihnioglu)

It was a resounding success.

Yin perfectly captured the spirit of Poiret, who banished the corset in his designs, in her 39 soft, gently flowing styles in a rich and varied color palette.

An enveloping loose shawl in white and gray was wrapped asymmetrically around the shoulders as the hem of a sparkly metallic dress peeped out.

An Oriental Chinese red satin pant suit beautifully captured the mood of the 1920s and Poiret's penchant for styles of the East.

Yin, who was born in China, was in her element.

Yet the designs, which very much bore her fingerprint, were never overly reverential.

Yin used large bows and belts to cinch the waist in a contemporary style, showing that this Poiret woman lives firmly in the present day.

VALENTINO'S FLOWER WOMEN

Flowers and romance were in the air at Valentino, metaphorically speaking.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

In a literal sense, there also was the sweltering heat owing to the conservatory show venue, which had giant tropical green plants lining the sides of the runway. The decor cross-pollinated into the clothes as designer Pierpaolo Piccioli took an unusually minimalist turn.

Designer Pierpaolo Piccioli accepts applause after Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Designer Pierpaolo Piccioli accepts applause after Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Blooms were a big theme.

They came on motifs, embroideries, large tulip-shaped sleeves and surreal flower-shaped hoods that evoked the Parisian couture styles of the 1950s.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Beginning in monochrome and moving into flashes of deep sunshine, pale yellow, pea green and Cerulean blue, a semicircle "frill" motif adorned hems and went down the front in one loose white gown. It cleverly evoked the shell shapes ubiquitous on the barriers at the sides of flower beds.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Sometimes Piccioli ventured creatively too far into his garden: one flower-hood look with an all-encompassing bloom print cut a rather wacky shape.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

The best look was in monochrome — a fringed coat with dramatic black hood in soft leather.

VALENTINO FRONT ROW

Actress Dakota Fanning led the front row at Valentino in a prestigious new museum venue inside the Hotel des Invalides grounds.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

With a "VLT" logo handbag and in a bright blue pleated shoulder-less Valentino gown that matched her eyes, the 24-year-old actress said she was taking it easy this year with the success of the historic crime drama "The Alienist," in which she stars and is currently airing in the US.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

"I'm just here to attend this show," she said.

Fanning sat with a view of the gold dome of the famed monument, the final resting place of Napoleon, which shimmered in the evening sun. She said she appreciated being able to attend such fashion spectacles.

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

"I've been lucky to come to the shows before. I love Valentino. It's such a classic, timeless brand," she said.

Models wear creations for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Models wear creations for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Models wear creations for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Models wear creations for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Models wear creations for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Models wear creations for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

A model wears a creation for Valentino ready-to-wear fall/winter 2018/2019 fashion collection presented in Paris, Sunday, March 4, 2018. (AP Photo/Thibault Camus)

Actress Kristin Scott Thomas poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Actress Kristin Scott Thomas poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Actress Dakota Fanning poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Actress Dakota Fanning poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Model Karlie Kloss poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Model Karlie Kloss poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Actress Dakota Fanning poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)

Actress Dakota Fanning poses for photographers before the Valentino ready-to-wear fall/winter 2018/2019 fashion week runway show in Paris, Sunday, March 4, 2018. (Photo by Vianney Le Caer/Invision/AP)