Pitt and Fincher 'like brothers'

Brad Pitt is filmmaker David Fincher's muse - because the pair are so easygoing, according to the actor's 'The Curious Case of Benjamin Button' co-star Taraji Henson.

The two stars have worked together on numerous films in their 15-year friendship, including 1995's 'Se7en' and 1999's 'Fight Club'.

The actress witnessed Pitt's close friendship with director Fincher during filming for the forthcoming drama - and she admits she and other castmembers, including Cate Blanchett, often felt a little left out because they have their own way of communication.

She told USA Today: "(Pitt)'s David's muse, partly because he's so easygoing. He'll crack a joke, or they'll start ripping (insulting) on each other, and everything is relaxed again.

"Sometimes you have to interrupt them just to get them to speak English.

They're like brothers - opposite in the way they act, but they understand each other the way families do."