Clemence Poesy (born October 1982 as Clemence Guichard) is a French actress and fashion model. After starting on the stage as a child, Poésy studied drama and has been active in both film and television since 1999, including some English-language productions. She is known for the roles of Fleur Delacour in the Harry Potter film series, Chloë in In Bruges, Rana in 127 Hours, and Natasha Rostova in War and Peace. Born in L'Hay-les-Roses, a southern suburb of Paris, she is the daughter of actor-writer Étienne Guichard and a French teacher. Poésy took her mother's maiden name as her stage name. She was sent to an alternative school in Meudon. Her father gave Poésy her first acting job when she was a child; then she had two lines at age 14. She has a younger sister, Maëlle Poésy-Guichard, who is also an actress.

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