Paul Giamatti is hungover…

Paul Giamatti is joining the cast of Todd Phillips’ The Hangover Part II,.

Giamatti joins a cast for the sequel which includes Bradley Cooper, Ed Helms, Zach Galifianakis, Justin Bartha, Ken Jeong, Mike Tyson, Jamie Chung and Liam Neeson.

It is now known who Giamatti will play in the film however he will be joining the cast in Thailand in a few weeks.

The Hangover Part II hits cinemas on May 26 2011.