Birthday Boy Toy: When ‘Twilight’ Star Kellan Lutz Went Nude

Kellan Lutz (31)

"I'm pretending this watermelon is your taint." - Obviously what Kellan Lutz is thinking in the pic above! The gorgeous Twilight actor follows Jamie Bell as the second fair-haired birthday hunk this week, but has about another person's worth of muscle mass to offer. Here's his sculpted ass in the classic Java Heat (2013)!