Born in London to an English mother and a Jewish-American father of German descent, Felberbaum moved to Italy with her family when she was 1 year old. At 15 years old she started working as a model and appearing in commercials and music videos. In 2000 she hosted the Italian version of the musical show Top of the Pops, and in 2002 she hosted the Rai 1 talk show Unomattina Estate. She made her acting debut in 2001 in the sitcom Via Zanardi, 33. Active in films, television and on stage, in 2011 she was nominated in the best Actress category at the David di Donatello for her performance in The Jewel. On 26 December 2015, she married A.S. Roma and Italy national football team midfielder Daniele De Rossi in a private ceremony in the Maldives; the couple had been in a relationship since 2011, and have a daughter together, Olivia Rose, born on 14 February 2014.