Lady GaGa and Justin Bieber are set to make cameo appearances as aliens in Men In Black III.

In a recent interview, the film’s director Barry Sonnenfeld confirmed their cameos while hinting that they will appear on an alien surveillance board.

Speaking to Collider he said: "In this [film] there are a few people that you'll see up on the surveillance board including Lady GaGa, Tim Burton, who probably knows more about aliens than I do, and let's see who else... Justin Bieber."

He added: "The challenge is getting celebrities that are famous, will give you permission and won't be like 'Who's that guy?’

Tommy Lee Jones, Jemaine Clement, Emma Thompson, Alice Eve and Bill Hader will also feature in the third instalment of the alien movie.

Men In Black III is released on May 25.

Watch the official trailer here