Gayet made her acting debut in a 1992 episode of the French TV seriesPremiers baisers, and had her first film role as an extra in , but her first role of public note was in the 1996 comedy Delphine 1, Yvan 0 by Dominique Farrugia.
Singing
Her musical performances include playing in video-clips for Benjamin Biolay and singing a duet with Marc Lavoine.
Film production
In 2007, she founded her own production company, Rouge International, with Nadia Turincev and produced films such as The Ride by Stephanie Gillard, Fix me by Palestinian Raed Andonia and Bonsai by Cristian Jimenez of Chile.
Film directing
In 2013, Gayet co-directed with Mathieu Busson the documentary Cinéasts featuring 20 French female film directors.
Other
Gayet appeared on the cover of the 17 January 2014 issue of the French Elle magazine. The issue hit newsstands on 15 January 2014, two days ahead of its usual release day. The headline read "Julie Gayet, Actress and Committed Woman, a French Passion".
Personal life
In 2003, Gayet married author and screenwriter Santiago Amigorena, but they divorced in 2006. The couple have two children. Gayet is a centre-left activist, having appeared in a video supporting François Hollande during the 2012 French presidential election. She is a member of the Support Committee of the PS candidate for the 2014 Paris mayoral election, Anne Hidalgo. She also supported same-sex marriage in France. In 2013 rumours started circulating that Gayet was in a secret relationship with President Hollande. On 10 January 2014, a story in the tabloid Closer featured seven pages of alleged revelations and photos about the affair, provoking wider media coverage. Hollande said he "regretted this violation of his private life" and was "thinking about" pursuing a legal response, but did not deny the substance of the story. The 10 January issue was so popular that Closer "reprinted the issue, with a further 150,000 copies scheduled to hit newsstands" on 15 January 2014. On 16 January 2014, the AFP news agency reported that Gayet would sue Closer for €50,000 in damages and €4,000 in legal costs. On 27 March 2014, a French court ordered Closer magazine to pay Gayet €15,000 for publishing the photos that revealed an affair between her and President Hollande. In November 2014, she was photographed with Hollande at the Élysée Palace gardens; it was revealed that her affair with Hollande was ongoing and that she was spending at least four nights a week with him there.