Updated: September 1, 2026
Mathilde Favier, the longtime public relations director for Dior Couture, left an indelible mark on the fashion world with her warmth, sharp eye, and effortless elegance. Her sudden death on August 17, 2026, in a car accident alongside her partner, film producer Nicolas Altmayer, stunned Paris and beyond. Behind the high-profile career stood a devoted mother of two. Her children, Héloïse and Carlo Agostinelli, have stepped into the public eye with quiet strength and heartfelt tributes that reveal the deep bond they shared with her.
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Who Are Mathilde Favier’s Children?
Mathilde Favier and American-Italian financier Robert Agostinelli married in the mid-1990s and welcomed two children before their divorce in the early 2000s. Héloïse was born in November 1998, and Carlo followed in 2000. Both are now adults who have carved distinct paths while carrying forward elements of their parents’ worlds—fashion for one, business and entrepreneurship for the other.
The siblings have remained close. In the days after their mother’s passing, they publicly expressed their grief and gratitude for the outpouring of support. Their words painted a portrait of a mother who taught them to live fully, laugh freely, and build something meaningful.
Héloïse Agostinelli’s Path in Fashion
Héloïse, now 27, inherited her mother’s refined sense of style and presence. She has worked as a model and appeared in the British reality series Made in Chelsea in her early twenties. She was frequently seen alongside Mathilde at fashion weeks, red-carpet events, and the Cannes Film Festival, including in 2024.
Those who knew the pair often remarked on their easy closeness. Héloïse has spoken of her mother as her entire world. In one of her most moving posts, she shared a final text exchange from the night before the accident, in which Mathilde called her “my beloved little Princess” and urged her to embrace happiness. The young woman later described the pain as overwhelming, noting that life felt as if it stopped the moment her mother took her last breath.
Carlo Agostinelli’s Journey in Business and Beyond
Carlo, 25 or 26, followed a more international academic route. He attended the prestigious Harrow School in England before studying international relations at Stanford University, where he also played soccer. He has since moved into entrepreneurship. In early 2025 he co-founded Nova Global, a San Francisco-based firm focused on investing in young talent and innovation. He has also been linked to philanthropic efforts, including work that uses soccer to support disadvantaged children.
Carlo’s tribute to his mother was equally raw and loving. He called her “the incarnation of life” and “our superhero,” thanking her for teaching him strength and values that will stay with him forever. He reassured her that he and Héloïse would look after each other and the wider family, exactly as she had always done.
Family Bonds and Lasting Influence
Mathilde’s children have emphasized the protective circle of family and friends that remains around them—sisters, their grandmother, nieces, nephews, and the many people Mathilde touched. At her memorial, both Héloïse and Carlo spoke of carrying her spirit forward: living, laughing, traveling, making mistakes, and one day telling their own children about the grandmother who radiated light.
Here is a clear overview of the key details: Detail Information Mother Mathilde Favier (1959–2026) Father Robert Agostinelli Daughter Héloïse Agostinelli (born November 1998) Son Carlo Agostinelli (born 2000) Héloïse’s path Model; appeared in Made in Chelsea Carlo’s path Stanford graduate; co-founder of Nova Global Shared with First marriage; divorced early 2000s
Conclusion
Mathilde Favier’s children, Héloïse and Carlo, represent the quieter, more personal side of a woman known for her professional brilliance. In the weeks since her death they have shown remarkable composure while mourning openly. Their stories remind us that even the most public lives are rooted in private love. As the fashion world continues to honor Mathilde’s legacy of beauty and generosity, her son and daughter are living proof of the values she passed on—curiosity, resilience, and the quiet determination to keep moving forward with grace.