It was quite the scene outside the Hollywood hot spot as helicopters and police officers were called in to help with crowd control.
Not that the birthday boy seemed bothered by the police presence. "1,100 people turned away!" Tyrese twittered. "17 police officers outside. Hellicopters, SHUT DOWN!"
It probably didn't help matters that Diddy was also tweeting about the bash—making it the party to crash.
As for Rihanna and her man, who are back in town after their PDA-filled vacay in Cabo...
No tweets but the BFFs with benefits seemed "very happy" as they danced and drank Grey Goose and bubbly.
"She was introducing him around the room to various people, and they seemed to be having a good time together," a club rep tells E! News.
Watch the chaos outside the club!
See more stars partying in our Celebrity Birthday Bashes gallery!