Mathilde Favier, the Dior public relations executive known here as Mathilde Dior, died at 57 in a car crash in western France on Monday. Nicolas Altmayer, 61, also died in the same crash.
The vehicle was on a departmental road in Airvault in the Deux-Sèvres region when it hit a heavy goods vehicle traveling in the opposite direction while overtaking another vehicle. A prosecutor opened an investigation for involuntary manslaughter by a driver to determine the circumstances.
Mathilde Favier at Dior
Favier joined Dior in 2011 after working at Prada and later became director of public relations for Dior Couture. She worked closely with Dior ambassadors and celebrity guests including Natalie Portman, Rihanna, Jennifer Lawrence, Anya Taylor-Joy, Camille Cottin and Jisoo.
In 2024, she published Mathilde à Paris with Frédérique Dedet. She also founded Esthétique & Cancer.
Nicolas Altmayer and
Altmayer was a French producer behind the OSS 117 franchise and films by François Ozon, Bertrand Bonello and Julia Ducournau. He and Éric Altmayer ran Mandarin & Compagnie and received the César Academy's Daniel Toscan du Plantier Award in 2017.
He produced OSS 117: Cairo, Nest of Spies, OSS 117: Lost in Rio and Brice de Nice. Le Figaro reported that Altmayer and Favier were traveling from Cabourg to the Île de Ré, and that Favier owned a home on the Île de Ré.
Airvault in the Deux
Nicolas Leclainche, the deputy prosecutor, said the crash involved a vehicle that “hit a heavy goods vehicle traveling in the opposite direction while they were overtaking another vehicle.” Fabien Onteniente said, “A great producer has died.” François Ozon wrote, “Shock and sadness. Nicolas Altmayer was a great producer. A supporter and a friend.”
Franck Gastambide told Le Figaro, “For 15 years, he was not only my producer but also my mentor, the father I would have wanted to have,”
The investigation now has to sort out the sequence on the road and the question of who was driving when the overtaking maneuver ended in the collision.







