Le Voyage en Douce (1980)

Synopsis
Released outside of France as Travels on the Sky, Voyage en Douce stars Dominique Sanda and Geraldine Chaplin as sisters. Both ladies are married, though Chaplin has just left her husband. Insecure about this move, Chaplin joins the self-reliant Sanda for a weekend vacation in the south of France, where the two siblings carry on a long discussion about male-female relationships. By the time Monday rolls around, the previously indecisive Chaplin emerges as the more resilient of the two sisters. Voyage en Douce director Michel Deville prevailed upon 15 famous French writers to contribute anecdotes concerning their sexual experiences; the most powerful (and best staged) was the story of a rape--a story contributed anonymously. ~ Hal Erickson, All Movie Guide