Directed by Luis Buñuel, Belle de Jour stars Catherine Deneuve as a young woman who begins leading a double life, balancing her marriage with secret visits to a Paris brothel. Based on the novel by Joseph Kessel, the story unfolds through shifting realities and personal exploration within a psychological drama framework.

Från IMDB:
A frigid young housewife decides to spend her midweek afternoons as a prostitute.