Heather Graham was featured in the movie The Hangover.
Heather Graham . In the 2000s , Graham starred in films Committed ( 2000 ) , Say It Is n't So ( 2001 ) , Mary ( 2005 ) , Gray Matters ( 2007 ) , The Hangover ( 2009 ) and its sequel , The Hangover Part III ( 2013 ) . The Hangover . The film stars Bradley Cooper , Ed Helms , Zach Galifianakis , Heather Graham , Ken Jeong , Rachael Harris , Mike Epps , Justin Bartha , and Jeffrey Tambor .