Sexy Shirtless Stars!

Colton Haynes

With a promise of "less clothing" in his second season of the MTV series Teen Wolf, the heartthrob gave fans a sneak preview by flaunting his chiseled abs in Malibu in April 2012. The show's producer uploaded a picture of Haynes on his Tumblr and commented that the actor/model went through "three months of serious training" to bulk up.

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