Stars Monkey Around at 'The Hangover 2' Premiere
May 20 2011, Published 12:12 p.m. ET
The stars of The Hangover Part II atteneded their Hollywood premiere at The Grauman's Chinese Theatre in Hollywood, Calif. yesterday and were joined by their favorite furry friend - Crystal the monkey.
Bradley Cooper, Ed Helms, Zach Galifanakis, Justin Bartha, Ken Jeong and Mike Tyson were all spiffed up while Crystal the monkey was all dolled up in a little pink dress.
Also at the premiere were engaged couple Dax Shepard and Kristen Bell and recently voted off Dancing With The Stars contestant, Romeo Miller. A very pregnant Alyssa Milano walked the red carpet as she proudly showed off her baby bump.
The Hangover Part II hits theaters May 26. Check out the hilarious trailer below!