Well, nobody saw this coming!
Well... it's who he left the club with that's causing a stir:
The Boyfriend singer posted a behind-the-scenes video to his Instagram account Friday morning showing him practicing his latest routine.
And oh yeah, he's shirtless. Obvi. Come on, it's the Biebs! LOLz!
Ch-ch-check out the video (above) to see Justin do what he does best in the outfit he does best!
[Video via Instagram.]