Belle de Jour () is a 1967 psychological drama film directed by Luis Buñuel, and starring Catherine Deneuve, Jean Sorel, and Michel Piccoli. Based on the 1928 novel Belle de jour by Joseph Kessel, the film is about a young woman who spends her midweek afternoons as a high-class prostitute, while her husband is at work. The title of the film is a play on words on the French term belle de nuit ("beauty of the night", i.e., a prostitute), as Séverine works during the day under the pseudonym "Belle de Jour". Her nickname can also be interpreted as a reference to the French name of the morning glory (Convolvulaceae), meaning "beauty of [the] day", a flower that blooms only during the day. Belle de Jour is one of Buñuel's most successful and famous films with many film historians calling Deneuve's performance her finest. It won the Golden Lion and the Pasinetti Award for Best Film at the Venice Film Festival in 1967. Plot Séverine Serizy (Catherine Deneuve), a young and beautiful housewife, is unable to share physical intimacy with her husband, Dr. Pierre Serizy (Jean Sorel), despite their love for each other. Her sexual life is restricted to elaborate fantasies involving domination, sadomasochism, and bondage. Although frustrated by his wife's frigidity toward him, he respects her wishes. While visiting a ski resort, they meet two friends, Henri Husson (Michel Piccoli) and Renée (Macha Méril). Séverine does not like Husson's manner and the way he looks at her. Back in Paris, Séverine meets up with Renée and learns that a common friend, Henriette, now works at a brothel. At her home, Séverine receives roses from Husson and is unsettled by the gesture. At the tennis courts, she meets Husson and they discuss Henriette and houses of pleasure. Husson mentions a high-class brothel to Séverine at 11 Cité Jean de Saumur. He also confesses his desire for her, but Séverine rejects his advances. Haunted by childhood memories, including one involving a man who appears to touch her inappropriately, Séverine goes to the high-class brothel, which is run by Madame Anaïs (Geneviève Page), who names her "Belle de Jour." That afternoon Séverine services her first client. Reluctant at first, she responds to the "firm hand" of Madame Anaïs and has sex with the stranger. After staying away for a week, Séverine returns to the brothel and begins working from two to five