Which actress plays the call girl in the 1967 film 'Belle de jour'?

'Belle de jour' is a classic French film directed by Luis Buñuel, released in 1967. It is based on the novel of the same name by Joseph Kessel, published in 1928. The film's title refers to a flower that blooms only during the day, symbolizing the main character's secret life.

The story revolves around Séverine Serizy, portrayed by Catherine Deneuve, a beautiful young woman with unique masochistic fantasies. Despite being married to the charming Dr. Pierre Serizy, played by Jean Sorel, she struggles to find satisfaction in their relationship. This leads to tension between them.

An acquaintance of the couple, Henri Husson, portrayed by Michel Piccoli, introduces Séverine to a high-class brothel he once visited. Intrigued and unsatisfied, Séverine decides to explore this hidden world. She meets Madame Anaïs, the brothel's owner, who assumes Séverine is in financial trouble. Séverine begins working there secretly, only during the afternoons, from 2 to 5 PM, earning her the nickname 'Belle de jour'.

The film explores themes of desire, identity, and the duality of human nature, capturing the complexities of Séverine's character and her journey of self-discovery.