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Well Helllllo, Kellan Lutz!

David Beckham taking his pants off? Old news. Kellan Lutz is the latest — and perhaps greatest? — celebrity underwear model.

The Twilight star — and one-time Abercrombie & Fitch model — looks h-o-t hot in new ads for Calvin Klein's X Underwear line.

Fellow actor Mehcad Brooks, Spanish tennis player Fernando Verdasco and Japanese soccer star Hidetoshi Nakata will also appear in briefs for the campaign, which kicks off in March.

Next up for Kellan? Costarring with Mandy Moore! He nabbed a role in the romantic comedy First Love, Then Marriage in which he'll be playing MM's hubby! It also stars Blythe Danner and Christopher Walken. Not too shabby.

What do you think of Kellan's new ad? Fan yourself for a minute, then post your thoughts below.

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