World War Z star Brad Pitt has admitted that he would throw a massive party if he discovered that the world was coming to an end.

The 49-year-old actor, who is engaged to Angelina Jolie, with whom he has six children, insisted that he wouldn't try and be a hero, if he found out that civilisation was under threat from zombies.

Speaking at the New York premiere for his recent apocalyptic movie, Pitt said: ''Would I do something heroic? Who knows? I think if I knew this was absolutely it, the final end of Earth, I'd probably just have a big party!''

Pitt further told the New York Post newspaper that he was a huge part of the movie's creative process, adding: ''I've worked on this film, this one project, forever. I've been involved in every step for at least five or six years.

''It's been so long, I can't remember. I'm one of the producing partners. I've been through every bit of the entire production. I'm in the editing room.''

He added: ''And despite all my heroic fight scenes, I still managed to eat everything and get some sleep. I admit, however, I did twist a couple of ankles.''