Kellan Lutz body image shorts hat guns

Working out has certainly done a body good for Kellan Lutz.

The 25-year-old Twilight actor, who seems to be getting buffer by the day, flashed us his veiny and ripped biceps on the way out of a Studio City gym.

In a recent interview, Kellan expressed an interest in becoming "a household name American action star" ... and we're thinking he may be well on his way.

We can't help but thank him for wearing the tightest shirts possible. Eye candy overload!