After her mother's death in 1964, she was raised by her grandparents in Mexico.
Born to Jean-Louis Sonnery de Fromental, a silk manufacturer and adventurer, and Francion Garreau-Dombasle, daughter of Maurice Garreau-Dombasle, the French ambassador to Mexico.
Graduating from the Conservatoire Musique de Paris, she is also a singer, performing in Spanish, English and French.
Has her look-alike puppet in the French show "Les guignols de l'info" (1988).
Her brother Gilbert Sonnery is a textile executive.
Is fluent in French and Spanish
Spent parts of her childhood at Chateau de Chaintré, her family's estate.
Stepmother of Justine Lévy.