Rihanna, Katy Perry Party At Coachella, Express Love For TupacWithout question, Dr. Dre and Snoop Dogg delivered the most star-studded set of the Coachella weekend complete with a holographic Tupac Shakur. What seemed like an endless line of celebrities lined the exit rows and center mix position. Rihanna, perched on the shoulders of a security guard, bounced to the beat while seemingly enjoying herself.