Warner Bros and Director Todd Phillips are bringing back the characters of Hangover movie on Hangover movie 2. The movie Hangover 2 is starring Bradley Cooper, Zach Galifianakis and Ed Helms.The sequel of Hangover will follow Phil (Bradley Cooper), Stu (Ed Helms), Alan (Zach Galifianakis) and Doug (Justin Bartha) travel to exotic Thailand for Stu's wedding. After the unforgettable bachelor party in Las Vegas, Stu is taking no chances and has opted for a safe, subdued pre-wedding brunch. However, things don’t always go as planned. What happens in Vegas may stay in Vegas, but what happens in Bangkok can't even be imagined.