[2] As a child, she prepared a sport studying course in classical dance at the Alain Astié school of Lyon and attempted to join the Opéra de Paris but was rejected because of her height (1.60 m).

[5] In December 2006, she hosted the second season of L'amour est dans le pré (French version of Farmer Wants a Wife), replacing Véronique Mounier while she was pregnant.

[5] In August 2008, she participated at an advertisement for the perfume Magnifique, a new fragrance of Lancôme, broadcast live on M6 from the Musée Rodin.

She co-hosts on January 8, 2016 the program La Grande Histoire de la Télévision - les 40 ans de l'Ina, produced by Arthur, where she retraces 40 years of television through pictures of archives in company of about twenty television presenters of all generations.

She then hosts on 9 June 2016 the opening of the UEFA Euro 2016 in direct from the Champ de Mars with famous French and international celebrities.

Alessandra Sublet began a career in radio on Nostalgie in 1997 before joining the channel MTV in New York City.

[13] In September 2010, she joined the radio France Inter to present a weekly program on Sunday morning titled Je hais les dimanches.

[14] In September 2014, she arrives on Europe 1 to host a program every Sunday in the late morning titled Petit dimanche entre amis.

[17] She gave birth to a girl named Charlie on 28 June 2012 from her relationship with Clément Miserez, a film and television producer.