Deréal was born in Saint-Cyr-l'École, Seine-et-Oise (now Yvelines), France. In 1961, Deréal represented Monaco in the Eurovision Song Contest 1961, with the song "Allons, allons les enfants" (Let's go, let's go children). Deréal finished joint tenth place with the Finnish entry "Valoa ikkunassa" (The lights in the window) sung by Laila Kinnunen and the Dutch entry "Wat een dag" (What a day) sung by Greetje Kauffeld, receiving six points. She died in Monaco.