Chris Brown Gives A Surprise Shirtless Performance At A New York Birthday Party

Partygoers at DJ ProStyle's birthday blowout got a little more than they bargained for at the Hammerstein Ballroom when Chris Brown decided to crash the party and hit the stage for a surprise show! 

The singer said he had no intentions of performing going into the night, but once he got a good look at the crowd he just couldn't help himself:
But the surprises didn't stop there, as fans got an earful AND an eyeful as Breezy eventually found himself shirtless during his impromptu, crotch-grabbin' performance!
We're guessing DJ ProStyle (and the ladies) didn't mind! LOLz!