Naomi Campbell wore a bikini yesterday for a fun beach day in Ibiza. The supermodel's off on her latest Mediterranean vacation. She and boyfriend, Vladislav Doronin, are often spotted lounging by the water in hotspots in Spain, France, and Italy. This getaway gave Naomi a chance to link up with her friends. Naomi hosted a party for Giuseppe Cipriani's 47th birthday on Saturday night. The bash brought out Naomi, Vlad, and other pals like Adrien Brody, as they marked Giuseppe's milestone at his new restaurant, Cipriani Downtown Ibiza. Work, though, may interrupt Naomi's travel plans this Summer. She's rumored to be participating in the finale of the Summer Olympics in her hometown of London, linking up with fellow UK models Kate Moss and Rosie Huntington-Whiteley to show off the best of British fashion.