After narrowing down our list of 64 sexy men, Robert Pattinson and Kellan Lutz are the last two left standing in our Hottest Shirtless Guy contest! On one side we have buff Kellan and on the other there's the always swoon-worthy Robert. As the Twilight costars face off we thought we'd help you decide by providing you pictures of the onscreen brothers' chests. Robert spends less time sans shirt than Kellan, but there are still more than enough sexy photos to go around. Click through to see gorgeous Rob and Kellan and then make sure to submit your votes on who you think should win!