Gwen Stefani kept the bikini fun coming today as she relaxed on a yacht in Cannes. The singer has been soaking up the sun in a rotating uniform of two-piece suits for the last several days, showing off her sculpted abs and arms while she hangs out with her boys, Kingston, Gavin, and Zuma. She lounged on deck this morning while Kingston tried his hand at jet-skiing with a friend. The Stefani-Rossdales took part in the film festival's many events since touching down in Nice more than a week ago. Gwen worked some red carpets at premieres for Brad Pitt's The Tree of Life and Sean Penn's This Must Be the Place in show-stopping gowns, and she linked up with Gavin for a fancy evening out at the amfAR Cinema Against AIDS gala. The family headed to France for the glamorous celebrations following a trip to Gavin's hometown of London, where they enjoyed a more low-key schedule of park visits, tennis, and jogging.