Video: PopSugar's 16 Sexiest Shirtless Men 2010

by Molly 2

Did you know that Zac Efron got accepted into two top universities, or that Kellan Lutz ditched Gummi Bears from his diet to get rock-hard Calvin Klein abs? Check out the Shirtless Bracket Sweet 16 and pick up a few pieces of fun trivia along the way! Plus, make sure to cast your votes before the round closes.