No Heather Graham for 'Hangover 2'?

Heather Graham will not be returning for the sequel to The Hangover, according to reports.

The actress, who starred as Las Vegas stripper Jade in the first movie, will apparently not be reunited with the original cast, including Bradley Cooper and Zach Galifianakis.

A Warner Bros rep told E! Online: "Unfortunately Heather won't be in the sequel. The way the story unfolds doesn't allow any room for her character to show up. I don't want to reveal too much of the film, but once you see it you'll understand."

Graham had previously expressed her desire to appear in the update, saying that she would like to play "a pregnant stripper".

Production on the film started this month. It is due for release on July 4, 2011.