Fat Girl (French: À ma sœur!, lit. 'To My Sister!') is a 2001 drama film written and directed by Catherine Breillat, and starring Anaïs Reboux and Roxane Mesquida. It was released in certain English-speaking countries under the alternative titles For My Sister and Story of a Whale. The film's plot follows two young sisters as they deal with coming-of-age, sibling rivalry, and desire while on vacation with their family.