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When fans flooded the streets of Westwood Village outside the Regency Village Theatre last night for a chance to see stars of The Hangover Part III at its premiere, they probably didn't anticipate having selfie photo shoots with Bradley Cooper, but that's what they got. In fact, the night was filled with special surprises as others from the cast such as Ed Helms, Zach Galifianakis, Heather Graham, Justin Bartha and Ken Jeong hit the red carpet. We don't want to give away any others and spoil the fun, but we promise they're good, so we've gathered them for you to enjoy in these 13 awesome moments with visual examples from The Hangover Part III premiere.