Anaïs is twelve and bears the weight of the world on her shoulders. She watches her older sister, Elena, whom she both loves and hates. Elena is fifteen and devilishly beautiful. Neither more futile, nor more stupid than her younger sister, she cannot understand that she is merely an object of desire. And, as such, she can only be taken. Or had. Indeed, this is the subject: a girl's loss of virginity. And, that summer, it opens a door to tragedy.
Unfortunately the movie Fat Girl is not yet available on HBO Max.
| Directing | Catherine Breillat | Director |
| Writing | Catherine Breillat | Screenplay |
| Production | Jean-François Lepetit | Producer |
| Production | Conchita Airoldi | Producer |
| Editing | Pascale Chavance | Editor |
| Art | François-Renaud Labarthe | Production Design |
| Camera | Giorgos Arvanitis | Director of Photography |
| Production | Fabrice Bigot | Casting |
| Production | Gilles Cannatella | Casting |
| Production | Olivier Carbone | Casting |
| Production | Nicolas Lublin | Casting |
| Production | Michaël Weill | Casting |
| Art | Cécilia Blom | Set Decoration |
| Art | Fabienne David | Set Decoration |
| Art | Christophe Graziani | Set Decoration |
| Art | Fabrice Héraud | Set Decoration |
| Art | Gérald Lemaire | Set Decoration |
| Art | Jean-Luc Molle | Set Decoration |
| Art | Yann Richard | Set Decoration |
| Costume & Make-Up | Ann Dunsford | Costume Design |
| Costume & Make-Up | Catherine Meillan | Costume Design |
| Production | Fredy Lagrost | Production Manager |
| Sound | Jean Minondo | Sound |
