[2] In 2021, she portrayed Nadine Gires in The Serpent, a British TV drama which tells the story of the serial killer Charles Sobhraj.
On 21 October 2011, Warnier became a student in audiovisual BTS and took part in the series Au Field de la nuit, during a performance of which she took to the floor to offer up a comment on the book that Nicolas Bedos was promoting.
She made several commercials for Évian and Carte Noire, and appeared in two short films and a public health spot for AIDS,[7] before joining the cast of the television series Au service de la France (screened in English as A Very Secret Service).
On 5 September 2016, Warnier became a reporter for the Le Petit Journal presented by Cyrille Eldin on Canal +, but left three weeks later.
[11] In 2022, she played Isabelle, a French ski guide,[12] in the movie Summit Fever with co-star Freddie Thorp.