Gaga, Bieber and Scherzinger to play aliens in Men In Black III

Lady Gaga, Justin Bieber and Nicole Scherzinger are set to appear in the upcoming third instalment of Men In Black.

The trio will apparently play evil aliens opposite Will Smith and Tommy Lee Jones who are set to reprise their roles as Agent J and Agent K, respectively. The Men In Black franchise is no stranger to casting pop stars. In addition to Will Smith in the lead role, Michael Jackson played Agent M in 2002's Men In Black II.

Director Barry Sonnenfeld said he decided to cast stars who he felt would still be recognisable in years to come:

"The challenge is getting celebrities that are famous and you won't be like, 'Who's that guy?' in 10 years," he said.

Men In Black III will open in cinemas in the UK on May 25. It has not yet been confirmed if Will Smith will perform MIB III’s theme song. The franchise’s previous two lead singles, Men In Black and Black Suits Comin’, went to Number 1 and Number 4 in the Official Singles Chart upon release.