Mathilde Favier and partner killed in French car accident

Mathilde Favier, the public relations director for Dior Couture, and her partner Nicolas Altmayer were killed in a fatal car accident on August 18, 2026, in the Deux-Sèvres department near La Rochelle, France. The couple was reportedly traveling toward Île de Ré at the time of the incident.

Favier’s children, Héloïse Agostinelli and Carlo Agostinelli, have shared emotional tributes on social media. Héloïse, a model, shared private chat logs and family photos to honor her mother’s memory, promising that her own future daughter will be named Mathilde. Carlo described his mother as a “super-heroine” and a joyful person, expressing the difficulty of processing the sudden loss.

The accident has caused significant shock within the French film and fashion industries, where Favier was a prominent figure.