What's new with Hollywood star Brad Pitt? He needs another butt.

No, not because there is something wrong with the original one but because the actor is refusing to reveal his bare bottom in his latest movie Curious Case of Benjamin Button.

So the producers are in a fix and are now looking to find a double to replace his rear.

But this is not the first time he has been caught in a 'butt' issue, he showed off his naked behind in 2004 film Troy but has now refused to do it again, reported contactmusic.com.

"Casting notices have been put out looking for suitable rears. Maybe Pitt's partner Angelina Jolie doesn't want him stripping off for anyone else these days,” reported the Sun.

The Curious Case of Benjamin Button is a 2008 film adaptation of the 1922 short story by the same name penned by F Scott Fitzgerald.

The film is being directed by David Fincher and stars Brad Pitt and Cate Blanchett in the lead roles, to be be released in 2008.