"I would probably say À ma soeur!, the Catherine Breillat film. If you could put that title instead of Fat Girl. I’m just kidding. I don’t really like saying my movie is related to that. I do think Catherine Breillat is brilliant and her movies have so much psychological weight to them. Those two sisters, they’re just, like, titanic, in terms of the conflict between them. The sexual scene with the boy is one of the most charged, terrifying, strange, impossible-to-describe scenes ever, that long take. The sort of depth of… Anaïs? The main girl? Just the depth of her look, how significant her neutral look and gaze is. Her stare is one of the best stares ever. And I stole the swimsuit from that movie and put it in my movie. I just completely stole the lime green one-piece and put it in my movie.
I just love Catherine Breillat. I just think she’s incredibly smart. It’s very exciting, and it’s a sign of a really incredible director to show how much tension and tone can be wrought out of a scene of a younger sister staring out of her covers at her older sister from the bed across the room. It’s kind of incredible how powerful and charged that movie feels before it becomes insane at the end. To me, the brutality and shock of the ending, I was feeling throughout the entire movie. It’s just crazy when it shows up literally."
Source