Picture Special: Justin Bieber's shirtless fitness shoot

Fresh from posing in his pants for Calvin Klein - which you can check out here - controversial pop star Justin Bieber has stripped off once again, this time for the latest issue of Men's Health. Check out the Beauty and the Beat singer below: Justin2 Justin5 Justin6 Justin3 Justin4 Watch the full behind the scenes clip below: [youtube height="HEIGHT" width="WIDTH"][/youtube]   More stories: Chris Hemsworth shows off his muscles on Saturday Night Live Justin Bieber strips off for filthy ‘Comedy Roast’ trailer