Lawrence looked ethereal in a white tulle Christian Dior gown, which shared a similarity to the thriller's poster. The 27-year-old actress had her hair swept up, with red-and-white flowers adorning the updo. She finished her look with a smoky burgundy eye and a warm lip. Meanwhile, the Mother! director looked dapper in all-black.
ET's Cameron Mathison spoke with the twosome on the red carpet, where they dished on their style choices.
"She's the only person who's allowed not to [wear black], 'cause she's life," Aronofsky told ET.
"Well, I think he's talking about my character, but I'm gonna pretend he's not," Lawrence replied about her boyfriend's "she's life" comment.