Diane Leyre

Leyre was born in Neuilly-sur-Seine to parents André and Sabine Leyre. Her father is a real estate developer, originally from the Gard department in Languedoc-Roussillon, who moved to Paris for better opportunities, while her mother is a former flight attendant. She has an elder brother, while she is also the cousin of Illana Barry, who was crowned Miss Languedoc-Roussillon 2020 and competed at Miss France 2021. Leyre moved out of her family home at age 17, living in a studio apartment in the same apartment complex as her parents, while working to pay her rent.

Leyre was educated at the Institut Privé de l'Alma, a private lycée in the 7th arrondissement of Paris. After graduating with her baccalauréat in economics and social sciences with honors, Leyre completed one year of law school before moving to Madrid to enroll in IE University, later graduating with a Bachelor of Business Administration degree. At the time of her enrollment, Leyre spoke only minimal Spanish and English, but later became fluent in both languages. After graduating, Leyre settled in Paris and began working with the real estate development company Jadley, based in the 7th arrondissement.