Kellan Lutz shows off his ripped abs while shirtless in these brand new Op Summer 2013 campaign photos!

Kellan Lutz is joined by actress Katrina Bowden, as the duo shows off the new line and has fun eating ice cream.

“Growing up in the mid-west I used to chase after ice cream trunks,” Kellan said, adding, “I love the summer, I love kite surfing at the beach, so I’ll definitely be wearing Op.”