Bradley Cooper, Zach Galifianakis, Ed Helms, and Crystal the Monkey in The Hangover Part II (2011)

Justin Bartha, Bradley Cooper, Zach Galifianakis, and Ed Helms in The Hangover Part II (2011)

Mike Tyson at an event for The Hangover Part II (2011)

Maria Menounos at an event for The Hangover Part II (2011)

Kristen Bell at an event for The Hangover Part II (2011)

Zach Galifianakis at an event for The Hangover Part II (2011)

Alyssa Milano at an event for The Hangover Part II (2011)

Ken Jeong at an event for The Hangover Part II (2011)

Trevor Donovan at an event for The Hangover Part II (2011)

Robert Downey Jr. and Susan Downey at an event for The Hangover Part II (2011)

Robert Downey Jr. at an event for The Hangover Part II (2011)

Bradley Cooper at an event for The Hangover Part II (2011)

Justin Bartha at an event for The Hangover Part II (2011)

Yvonne Strahovski at an event for The Hangover Part II (2011)

Jamie Chung at an event for The Hangover Part II (2011)

Jordin Sparks at an event for The Hangover Part II (2011)

Bradley Cooper, Zach Galifianakis, Todd Phillips, and Ed Helms in The Hangover Part II (2011)

Zach Galifianakis in The Hangover Part II (2011)

Bradley Cooper, Zach Galifianakis, Mason Lee, and Ed Helms in The Hangover Part II (2011)

Bradley Cooper, Zach Galifianakis, Ken Jeong, and Ed Helms in The Hangover Part II (2011)

Bradley Cooper, Ken Jeong, and Ed Helms in The Hangover Part II (2011)

Zach Galifianakis and Mason Lee in The Hangover Part II (2011)

Bradley Cooper, Zach Galifianakis, Ed Helms, Crystal the Monkey, and Aroon Seeboonruang in The Hangover Part II (2011)

Justin Bartha and Jamie Chung in The Hangover Part II (2011)

Bradley Cooper, Zach Galifianakis, Ken Jeong, Todd Phillips, and Ed Helms in The Hangover Part II (2011)

Justin Bartha, Bradley Cooper, and Ed Helms in The Hangover Part II (2011)

Nirut Sirichanya and Jamie Chung in The Hangover Part II (2011)

Sasha Barrese, Justin Bartha, and Nirut Sirichanya in The Hangover Part II (2011)

Bradley Cooper, Zach Galifianakis, and Ed Helms in The Hangover Part II (2011)

Bradley Cooper, Ken Jeong, Ed Helms, and Crystal the Monkey in The Hangover Part II (2011)

Bradley Cooper and Zach Galifianakis in The Hangover Part II (2011)

Bradley Cooper in The Hangover Part II (2011)

Crystal the Monkey in The Hangover Part II (2011)

Bradley Cooper, Zach Galifianakis, Ken Jeong, Ed Helms, and Crystal the Monkey in The Hangover Part II (2011)