Kellan Lutz and Katrina Bowden Sizzle in Summer Ad Campaign

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Nothing says summer like Kellan Lutz's abs or a watermelon bikini.

The "Twilight" hunk and "30 Rock" actress Katrina Bowden, who was sporting that fruity two-piece, hit the shore for a recent photo shoot for Op's new "Making Waves" campaign. The pair, who have ahhh-mazing beach bodies, spent the day frolicking in the waves, eating watermelon and ice cream, and riding bikes. Tough job, eh?

The blond beauty tweeted, " So excited to finally show my new @OpOceanPacific campaign with @KellanLutz! Here's our first Ad:"

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Though Lutz wrapped his four-year stint as Emmett Cullen in the "The Twilight Saga" last year, his career hasn't slowed down a bit. The 28-year-old beefcake is currently filming "Tarzan," where he'll put his hot body to work as the jungle-loving main character.

Meanwhile, Bowden's hit show, "30 Rock," aired its final episode in January 2013 after seven amazing seasons. The 24-year-old is tied to several new projects, including "Scary Movie 5."

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But let's face it, who could possibly focus on work when you're having this much fun at a beachside photo shoot?

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