Leonardo DiCaprio says he and Brad Pitt "forged a cinematic bond" making Quentin Tarantino's "Once Upon a Time ... in Hollywood."

The two stars, along with Margot Robbie and Tarantino, spoke to reporters at the Cannes Film Festival on Wednesday, the day after "Once Upon a Time ... in Hollywood" premiered at the French event. The movie is the first feature DiCaprio and Pitt have made together, though they co-starred in a 2015 short directed by Martin Scorsese.

More Images
Actor Brad Pitt, left, and director Quentin Tarantino pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Leonardo DiCaprio says he and Brad Pitt "forged a cinematic bond" making Quentin Tarantino's "Once Upon a Time ... in Hollywood."

Actor Brad Pitt, left, and director Quentin Tarantino pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Tarantino's film stars DiCaprio as a 1960s actor in Hollywood and Pitt as his stunt double. It's set against the backdrop of the 1969 Manson family murders. Robbie plays Sharon Tate.

Director Quentin Tarantino poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Director Quentin Tarantino poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, from left, Margot Robbie, director Quentin Tarantino and actor Brad Pitt pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, from left, Margot Robbie, director Quentin Tarantino and actor Brad Pitt pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Director Quentin Tarantino poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Director Quentin Tarantino poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Leonardo DiCaprio poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Leonardo DiCaprio poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, from left, Margot Robbie and Brad Pitt pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, from left, Margot Robbie and Brad Pitt pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actress Margot Robbie poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actress Margot Robbie poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt, left, and director Quentin Tarantino pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt, left, and director Quentin Tarantino pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, left, poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, left, poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, left, and Brad Pitt pose for photographers at the premiere of their film "Once Upon a Time in Hollywood" at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, left, and Brad Pitt pose for photographers at the premiere of their film "Once Upon a Time in Hollywood" at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt, from right, director Quentin Tarantino, wife Daniela Pick, actors Margot Robbie and Leonardo DiCaprio pose for photographers upon departure from the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (Photo by Joel C RyanInvisionAP)

Actor Brad Pitt, from right, director Quentin Tarantino, wife Daniela Pick, actors Margot Robbie and Leonardo DiCaprio pose for photographers upon departure from the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (Photo by Joel C RyanInvisionAP)

Actors Leonardo DiCaprio, left, and Brad Pitt pose for photographers upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (AP PhotoPetros Giannakouris)

Actors Leonardo DiCaprio, left, and Brad Pitt pose for photographers upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (AP PhotoPetros Giannakouris)

Actors Leonardo DiCaprio and Brad Pitt pose for photographers upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (Photo by Joel C RyanInvisionAP)

Actors Leonardo DiCaprio and Brad Pitt pose for photographers upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (Photo by Joel C RyanInvisionAP)

Actor Leonardo DiCaprio poses for photographers upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (AP PhotoPetros Giannakouris)

Actor Leonardo DiCaprio poses for photographers upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (AP PhotoPetros Giannakouris)

Pitt says he hopes they get to work together again.

Actor Brad Pitt, left, and director Quentin Tarantino pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt, left, and director Quentin Tarantino pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Tarantino's film stars DiCaprio as a 1960s actor in Hollywood and Pitt as his stunt double. It's set against the backdrop of the 1969 Manson family murders. Robbie plays Sharon Tate.

Actor Brad Pitt, left, and director Quentin Tarantino pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt, left, and director Quentin Tarantino pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Director Quentin Tarantino poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Director Quentin Tarantino poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, from left, Margot Robbie, director Quentin Tarantino and actor Brad Pitt pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, from left, Margot Robbie, director Quentin Tarantino and actor Brad Pitt pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Director Quentin Tarantino poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Director Quentin Tarantino poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Leonardo DiCaprio poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Leonardo DiCaprio poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, from left, Margot Robbie and Brad Pitt pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, from left, Margot Robbie and Brad Pitt pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actress Margot Robbie poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actress Margot Robbie poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt, left, and director Quentin Tarantino pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt, left, and director Quentin Tarantino pose for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, left, poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, left, poses for photographers at the photo call for the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Wednesday, May 22, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, left, and Brad Pitt pose for photographers at the premiere of their film "Once Upon a Time in Hollywood" at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (Photo by Vianney Le CaerInvisionAP)

Actors Leonardo DiCaprio, left, and Brad Pitt pose for photographers at the premiere of their film "Once Upon a Time in Hollywood" at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (Photo by Vianney Le CaerInvisionAP)

Actor Brad Pitt, from right, director Quentin Tarantino, wife Daniela Pick, actors Margot Robbie and Leonardo DiCaprio pose for photographers upon departure from the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (Photo by Joel C RyanInvisionAP)

Actor Brad Pitt, from right, director Quentin Tarantino, wife Daniela Pick, actors Margot Robbie and Leonardo DiCaprio pose for photographers upon departure from the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (Photo by Joel C RyanInvisionAP)

Actors Leonardo DiCaprio, left, and Brad Pitt pose for photographers upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (AP PhotoPetros Giannakouris)

Actors Leonardo DiCaprio, left, and Brad Pitt pose for photographers upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (AP PhotoPetros Giannakouris)

Actors Leonardo DiCaprio and Brad Pitt pose for photographers upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (Photo by Joel C RyanInvisionAP)

Actors Leonardo DiCaprio and Brad Pitt pose for photographers upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (Photo by Joel C RyanInvisionAP)

Actor Leonardo DiCaprio poses for photographers upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (AP PhotoPetros Giannakouris)

Actor Leonardo DiCaprio poses for photographers upon arrival at the premiere of the film 'Once Upon a Time in Hollywood' at the 72nd international film festival, Cannes, southern France, Tuesday, May 21, 2019. (AP PhotoPetros Giannakouris)