FAT GIRL (À ma soeur!) is a French movie written and directed by Catherine Breillat in 2001.
Anaïs (13 years old) and her sister Elena (15) are on holiday. While Elena is a sexy young girl, Anaïs is obese. One day, Elena makes the acquaintance of Fernando, an Italian student who seduces her. A few days later, she invites him in her room at night while Anaïs is pretending to sleep and forced to see her sister make love to Fernando. Although Anaïs tells Elena that she's not interested in her flirtations, the young girl, aware of the ugliness of her own body, is dying of jealousy.
The review of this Movie prepared by Daniel Staebler