The Most Mind-Blowing Body Transformations Of 2013!
Lets get one thing straight. Justin Bieber has ALWAYS been in great shape! But this was the year that he went from a skinny stud to a buff beefcake! The proof was in the pudding too, as the Biebs went with the shirtless look throughout most of 2013 to show off the results of his hard work! Hey, we're not complaining!