Pictures of Bradley Cooper Signing Autographs in Berlin

Bradley Cooper stopped to sign autographs for fans in Berlin yesterday following a morning promotional appearance. He's still traveling around the globe on behalf of his number one hit Limitless. Despite dealing with a hectic schedule and a recent breakup, Bradley took time out to chat with Buzz last week about his mind-bending thriller and what we can expect to see in The Hangover Part II. We'll get a better idea of the trouble Bradley and his costars Ed Helms, Justin Bartha, and Zach Galifianakis get in with their sequel when their first full-length trailer is released on Friday on April Fools'.