The premiere of The Hangover 2 took place in L.A. last night. Diddy (ahem, Swag?) was there. Robert Downey, Jr. was there. Flo Rida (um...?) was there. And then there was the moment when Ron Artest, Mike Tyson, and Nas showed that they too were there by posing for this picture together. Let's just hope Ron-Ron and Nasir weren't discussing a musical collaboration on the way into the theater, eh? [via AllEyesOnWho]