Rosalie Blum is a 2015 French comedy-drama film written and directed by Julien Rappeneau in his directorial debut. The film is based on a graphic novel series of the same name by Camille Jourdy. It stars Noémie Lvovsky, Kyan Khojandi and Alice Isaaz.^[3][4]

Vincent Machot lives an ordinary life, divided between his hair salon, his cousin, his cat, and his intrusive mother. With a very reserved character, his romantic life is limited to missed dates with his friend, who had been living in Paris for several months but was not keen to meet him again. By chance, he meets Rosalie Blum, the manager of a small business and a solitary and mysterious woman, whom Vincent is convinced he had met before. But where? Intrigued, he decides to follow her everywhere in the hope of learning more. Rosalie eventually notices that Vincent is following her, and asks her niece, Aude, an idle and lazy student, to help her watch Vincent. Aude invites her three whimsical friends to assist in her mission to discover more about Vincent. The team gathers clues, suspecting Vincent of evil and criminal intent. After this careful investigation, the characters' true natures are revealed, with their personal lives unraveled and the barriers between them removed.

• Noémie Lvovsky as Rosalie Blum
• Kyan Khojandi as Vincent Machot
• Alice Isaaz as Aude Cerceau
• Anémone as Simone Machot
• Philippe Rebbot as The room-mate
• Sara Giraudeau as Cécile
• Camille Rutherford as Laura
• Nicolas Bridet as Laurent
• Grégoire Oestermann as Aude's father
• Aude Pépin as Aude's sister

Most of the scenes were filmed in Nevers in Bourgogne-Franche-Comté between March and April 2015.^[5][6] The end scenes were filmed in Leffrinckoucke in the Nord the month after.^[7]