Kellan Lutz Strips for

Abercrombie & Fitch model turned Twilight star turned Calvin Klein underwear model Kellan Lutz stripped down for the latest issue of Interview magazine and talked about working with Bruce Weber, jogging shirtless with his dogs, and why he'll never turn his back on modeling.

Lutz has quickly become a sex symbol among gay men for his appearances on The Ellen DeGeneres Show -- he showed the talk-show host how to do a perfect push-up -- and as the latest in a string of men who don't let anything get between them and their Calvins.

He shot numerous shirtless photos for the magazine, and the website features a behind-the-scenes video of Lutz working out.

Check it out here.