If there's one thing we'll never tire of, it's a shirtless Kellan Lutz.

It seems like the "Twilight" franchise hottie is always hanging out without a top on -- and, this time, he's getting paid for it!

The ridiculously buff 28-year-old is one of the new faces (and bodies) of Op's Spring Summer 2013 campaign, along with "30 Rock" stunner Katrina Bowden.

The two recently stripped down to shoot the brand's latest swimsuits and apparel, where they show some serious skin on the beach.

We've never been more jealous of a watermelon:


Check out more photos above!

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