Biasini studied art history at the Sorbonne in Paris and theater at the Lee Strasberg Institute in Los Angeles and the Actors Studio in New York City.

She made her acting debut in 2004, starring in the Emmy-nominated French mini-series Julie, chevalier de Maupin [fr], a swashbuckling adventure story loosely based on the life of the sword-wielding 17th-century opera star Julie d'Aubigny (Mlle.

In 2005, she made her stage debut in Barefoot in the Park (Pieds nus dans le parc) at the Théâtre Marigny in Paris.

[1] Biasini wrote a book called, La beauté du ciel, which was published in January 2021[2] and translated the same year into German.

[4] She gave birth to a daughter called Anna on 11 February 2018 with her partner Gil Lefeuvre.