Los Angeles, Apr 20 (IANS): Singer Lady Gaga is to make a cameo appearance as an alien in upcoming movie "Men in Black 3".

Director Barry Sonnenfeld revealed the singer could make an appearance as an alien in the movie, which will also have a cameo by teenage singer Justin Bieber.

"So, the challenge is getting celebrities that are famous, will give you permission and won't be like 'Who's that guy?' in 10 years. So that's one thing, the alien surveillance board that we've had in all three movies," aceshowbiz.com quoted Sonnenfeld as saying.

Talking about nabbing famous names for the cameo part in the "Men in Black" franchise, Sonnenfeld said: "The first movie I know we had (Steven) Spielberg, Danny DeVito, George Lucas, (Sylvester) Stallone, Isaac Mizrahi, my baby daughter."

"I can't remember who we had in the second one, but in this one 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... oh, I think in the second one we had Martha Stewart and Michael Jackson."

"So far we've been pretty luck and people have been kind and interested. I am surprised that Lady Gaga said yes," he added.

Asked whether Gaga would be able to tackle a comic role, the filmmaker said: "Yes, and by the way, probably could be an alien."

Based on Lowell Cunningham's comic, "Men in Black 3" will focus on time travel involving Smith's Agent J. It is scheduled to open in the US May 25.