It was a hot day in Malibu yesterday, and we're not just talking about the weather. Shia LaBeouf showed off his toned arms and stomach after a trip to the beach with some friends. He's still rocking the brace on his left hand, but lucky for us he ditched a few of his other accessories, like his top. While there's nothing officially going on between him and Isabel Lucas, we can't help but wonder who looks hotter shirtless — Shia or Isabel's beach-loving ex-boyfriend Adrian?