Princess Stéphanie of Monaco net worth: Princess Stéphanie of Monaco is the youngest child of Grace Kelly and Rainier III, Prince of Monaco. She has a net worth of $100 million dollars. Born in Monaco on February 1, 1965, Stéphanie's full name is Stéphanie Marie Elisabeth. She is a member of the House of Grimaldi by birth and has been married twice to Daniel Ducruet and Adans Lopez Peres. She is currently divorced and is seventh in the line of succession. Stéphanie was in a critical car accident with her mother on September 13, 1982. She survived, however her mother died the following day. Stéphanie speaks Italian, French, Monegasque and English and studied at Dames de Saint-Maur as well as Dupanloup. She took an interest in dance, horse riding, gymnastics, fashion and singing. She currently has three children by the names of Louis Robert Paul Ducruet, Pauline Grace Magui Ducruet, and Camille Marie Kelly Gottlieb. She released two studio albums titled Besoin and Stéphanie.