Belle de jour
Catherine Deneuve, Jean Sorel, Michel Piccoli, Geneviève Page, Pierre Clémenti, Françoise Fabian, Macha Méril, Muni, Maria Latour, Claude Cerval
7,7 from IMDB
Severine is a beautiful young woman married to a doctor. She loves her husband dearly, but cannot bring herself to be physically intimate with him. She indulges instead in vivid, kinky, erotic fantasies to entertain her sexual desires. Eventually she becomes a prostitute, working in a brothel in the afternoons while remaining chaste in her marriage.