David Guetta

J.Lo made her Coachella debut Saturday night, popping up as a surprise guest during David Guetta's set. The crowd lost it when Guetta teased he had "invited a friend" and out came Lopez in a skintight, plunging bodysuit that showed off her insanely toned figure.

Rockstar DJ Tiesto just showed us how to get a laugh out of a multi-millionaire -- simply total his South Beach dock by smashing into it with a yacht!