Former "Game of Thrones" co-stars Kit Harington and Rose Leslie married Saturday with a church service and a celebration at the bride's ancestral castle in Scotland.

Kit Harington and Rose Leslie at Rayne Church, Kirkton of Rayne in Aberdeenshire, after their wedding. PRESS ASSOCIATION Photo. Picture date: Saturday June 23, 2018. See PA story SHOWBIZ Snow. Photo credit should read: Jane Barlow/PA Wire

Kit Harington and Rose Leslie at Rayne Church, Kirkton of Rayne in Aberdeenshire, after their wedding. PRESS ASSOCIATION Photo. Picture date: Saturday June 23, 2018. See PA story SHOWBIZ Snow. Photo credit should read: Jane Barlow/PA Wire

The couple and guests arrived for the afternoon service at Rayne Church, close to the 900-year-old Wardhill Castle in northeast Scotland, which is owned by Leslie's family. Harington, wearing a morning suit, and Leslie, in a flowing ivory gown and veil, smiled at members of the public who had gathered outside the church.

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Kit Harington and Rose Leslie at Rayne Church, Kirkton of Rayne in Aberdeenshire, after their wedding. PRESS ASSOCIATION Photo. Picture date: Saturday June 23, 2018. See PA story SHOWBIZ Snow. Photo credit should read: Jane Barlow/PA Wire

Former "Game of Thrones" co-stars Kit Harington and Rose Leslie married Saturday with a church service and a celebration at the bride's ancestral castle in Scotland.

Rose Leslie with her father Sebastian Leslie arrive at Rayne Church, Kirkton of Rayne in Aberdeenshire, for her wedding ceremony with Game Of Thrones co-star Kit Harington. Photo credit should read: Jane Barlow/PA Wire

The couple and guests arrived for the afternoon service at Rayne Church, close to the 900-year-old Wardhill Castle in northeast Scotland, which is owned by Leslie's family. Harington, wearing a morning suit, and Leslie, in a flowing ivory gown and veil, smiled at members of the public who had gathered outside the church.

Actor Peter Dinklage arrives at Rayne Church, Kirkton of Rayne in Aberdeenshire, for the wedding ceremony of his Game Of Thrones co-stars Kit Harington and Rose Leslie. Photo credit should read: Jane Barlow/PA Wire

Guests included the pair's "Game of Thrones" co-stars Peter Dinklage, Maisie Williams, Sophie Turner and Emilia Clarke.

Game of Thrones actor Kit Harington arrives, at Rayne Church, Kirkton of Rayne in Aberdeenshire, Scotland, Saturday June 23, 2018. (Jane Barlow/PA via AP)

Later the newlyweds were showered with rose petal confetti as they left the church and drove off in a Land Rover festooned with "Just Married" signs to a reception on the castle grounds.

Actors Kit Harington and Rose Leslie react as they leave after their wedding ceremony, at Rayne Church, Kirkton of Rayne in Aberdeenshire, Scotland, Saturday June 23, 2018. (Jane Barlow/PA via AP)

Harington and Leslie, who are both 31, met in 2012 on the set of the HBO fantasy series, where they played a couple as the characters Jon Snow and Ygritte. Leslie left the cast in 2014 and currently stars in U.S. legal drama "The Good Fight."

Actor Jack Donnelly arrives with partner Malin Akerman for the wedding ceremony of Game Of Thrones actors Kit Harington and Rose Leslie, at Rayne Church, Kirkton of Rayne in Aberdeenshire, Scotland, Saturday June 23, 2018.  (Jane Barlow/PA via AP)

The couple announced their engagement with a notice in the Times of London newspaper in September.

Rose Leslie with her father Sebastian Leslie arrive at Rayne Church, Kirkton of Rayne in Aberdeenshire, for her wedding ceremony with Game Of Thrones co-star Kit Harington. Photo credit should read: Jane Barlow/PA Wire

Rose Leslie with her father Sebastian Leslie arrive at Rayne Church, Kirkton of Rayne in Aberdeenshire, for her wedding ceremony with Game Of Thrones co-star Kit Harington. Photo credit should read: Jane Barlow/PA Wire

Guests included the pair's "Game of Thrones" co-stars Peter Dinklage, Maisie Williams, Sophie Turner and Emilia Clarke.

Actor Peter Dinklage arrives at Rayne Church, Kirkton of Rayne in Aberdeenshire, for the wedding ceremony of his Game Of Thrones co-stars Kit Harington and Rose Leslie. Photo credit should read: Jane Barlow/PA Wire

Actor Peter Dinklage arrives at Rayne Church, Kirkton of Rayne in Aberdeenshire, for the wedding ceremony of his Game Of Thrones co-stars Kit Harington and Rose Leslie. Photo credit should read: Jane Barlow/PA Wire

Later the newlyweds were showered with rose petal confetti as they left the church and drove off in a Land Rover festooned with "Just Married" signs to a reception on the castle grounds.

Game of Thrones actor Kit Harington arrives, at Rayne Church, Kirkton of Rayne in Aberdeenshire, Scotland, Saturday June 23, 2018. (Jane Barlow/PA via AP)

Game of Thrones actor Kit Harington arrives, at Rayne Church, Kirkton of Rayne in Aberdeenshire, Scotland, Saturday June 23, 2018. (Jane Barlow/PA via AP)

Harington and Leslie, who are both 31, met in 2012 on the set of the HBO fantasy series, where they played a couple as the characters Jon Snow and Ygritte. Leslie left the cast in 2014 and currently stars in U.S. legal drama "The Good Fight."

Actors Kit Harington and Rose Leslie react as they leave after their wedding ceremony, at Rayne Church, Kirkton of Rayne in Aberdeenshire, Scotland, Saturday June 23, 2018. (Jane Barlow/PA via AP)

Actors Kit Harington and Rose Leslie react as they leave after their wedding ceremony, at Rayne Church, Kirkton of Rayne in Aberdeenshire, Scotland, Saturday June 23, 2018. (Jane Barlow/PA via AP)

The couple announced their engagement with a notice in the Times of London newspaper in September.

The bride's father, Sebastian Leslie, said Saturday he was "absolutely thrilled" about the wedding.

Actor Jack Donnelly arrives with partner Malin Akerman for the wedding ceremony of Game Of Thrones actors Kit Harington and Rose Leslie, at Rayne Church, Kirkton of Rayne in Aberdeenshire, Scotland, Saturday June 23, 2018.  (Jane Barlow/PA via AP)

Actor Jack Donnelly arrives with partner Malin Akerman for the wedding ceremony of Game Of Thrones actors Kit Harington and Rose Leslie, at Rayne Church, Kirkton of Rayne in Aberdeenshire, Scotland, Saturday June 23, 2018.  (Jane Barlow/PA via AP)

"It's an absolutely lovely day for us," he said.