Justin Bieber Strips Down To His Underwear

Justin Bieber is the latest celeb to jump on the #mycalvins bandwagon, and while he didn't even bother hashtagging the above photos, he's already caused quite a stir with the shirtless snapshot!

Bieber posted the Instagram pic on Tuesday and wrote, "What if I do a Calvin Klein campaign? Comment below yes or no." Um, obviously we're voting yes! And we have a feeling most of the Beliebers out there would agree, but would CK actually hire the bad boy pop star to front one of their campaigns? They did use Mark Wahlberg back in the day ... and this was before he settled down and had a bunch of kids.

In other news, the Biebs finally uploaded a more detailed shot of his newest tattoo, and it looks like he's well on his way to having another sleeve! Or is he? "Done with tats 4 a while," he wrote. "Where I wanna be.." But given how many he's amassed over the last few years, we doubt it...