Kellan Lutz tank top shorts socks sneakers bag gym muscles baseball cap sunglasses duffle

Kellan Lutz hit the gym in Studio City on Wednesday, and even though it's barely 60 degrees in SoCal, the Twilight hunk took the opportunity to show off his ginormous guns in a revealing mank top. Not that we're complaining...

So what's next for the beefy actor? We already knew he was playing the role of Poseidon in the upcoming film Immortals, and the first shot of Kellan in character has been released ... click after the jump to see his buffness!