George Clooney turns 49 today, and he was up bright and early to film The Descendants on the beach in Hawaii — not a bad place to spend his special day. He was surrounded by a few costars, though his girlfriend, Elisabetta, didn't break out her own bikini body to watch her man film. We're honoring handsome George by taking a look at his ever-changing haircuts through the years, and he actually gave us a present this week: some sexy shirtless shots in the preview for The American — so hot. Happy 49th birthday, George!