Who’s Who of the entertainment world came out to help Mr. Bad Boy himself usher in his 40th birthday last night at one his famed parties in the City.

Diddy’s bash was black tie and ultra exclusive. Celebrity guests included the likes of Jay-z,  Russell Simmons, Martha Stewart, Kim Kardashian, Tyrese, Keri Hilson, Al Sharpton, Spike Lee, Cassie & Steve Stoute just to name a few. Trey Songz sung happy birthday to the birthday boy. (Pause)