Kellan Lutz: Shirtless Op Pics with Bikini-Clad Katrina Bowden

Kellan Lutz shows off his amazing ripped shirtless abs in these brand new images for the Op Spring Summer 2013 “Making Waves” campaign.

The 27-year-old actor is joined by a bikini-clad Katrina Bowden in the photos, where they can be seen splashing around in the ocean and having fun in the sun!

“I love the summer, I love kite surfing at the beach, so I’ll definitely be wearing Op,” Kellan said about the brand. “One of my favorite styles is the hybrid short. They dry quickly so you can wear them in the water, then out around town.”

“I love mixing and matching the brightly colored bikinis, tank tops and shorts I like to create my own individual beach style,” Katrina said.

15+ pictures inside from shirtless Kellan Lutz and bikini-clad Katrina Bowden‘s Op campaign…