Jay-Z (#7) and Beyonce (#4), South of France

Jay-Z and Sean "P. Diddy" Combs (#33) may battle for the top "rap mogul" spot on the Forbes Celebrity 100, but the rivalry doesn't affect their real-life friendship. In 2007, Jay-Z and then-girlfriend Beyonce were snapped on Combs' megayacht in the south France. The press had a field day when the duo strolled along the famously nude beach of Saint-Tropez—fully clothed. Shortly after their marriage, Mr. and Mrs. -Z were spotted on the S.S. Diddy again, during the 2008 Cannes Film Festival in May. And this crew doesn't party alone—Lindsay Lohan and Naomi Campbell were just two of the boldfaced names who hopped on-board.