Little Girl Blue is a 2023 biographical docudrama film written and directed by Mona Achache based on the life of her mother, the writer and photographer Carole Achache, starring Marion Cotillard as Carole Achache and Mona Achache as herself. The film is a co-production between France and Belgium and had its world premiere at the 2023 Cannes Film Festival in the Special Screenings section on 21 May 2023, where it competed for the Golden Eye and was well received by critics. The title comes from the song of the same name written by Richard Rodgers and Lorenz Hart. The film was released theatrically in France by Tandem on 15 November 2023 and in Belgium by Galeries Distribution on 3 April 2024.