Brad Pitt would throw a party if the world was about to end - not try and save the planet.

The 49-year-old actor has been jetting around the world promoting his apocalyptic horror movie 'World War Z' but has confessed if he was faced with zombies intent on destroying civilisation he'd go out in style and have a huge bash rather than try and stop them.

Brad - who was in New York on Monday night (17.06.13) for the latest premiere - 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!''

The Hollywood star - who is engaged to Angelina Jolie, with whom he raises six children - also revealed he has been involved with the making of 'World War Z' more than on any other film in his career.

In fact, Brad - who also co-produced the project as well as star in it - has been such a big part of the creative process he has already seen the movie about 40 times.

He told the New York Post newspaper: ''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.''