Justin Bieber and Lady Gaga to Play Aliens in 'Men in Black III'

Justin Bieber and Lady Gaga are used to being treated like otherworldly beings, so their cameos in the upcoming Men in Black III will likely seem completely natural.

Director Barry Sonnenfeld confirmed that the Biebs and Gaga would make brief appearances in the next flick, although their roles are decidedly limited. "In this [installment] 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." 

Cue orgiastic screaming.

Sonnenfeld was careful picking his cameo subjects: "The challenge is getting celebrities that are famous, will give you permission and won't be like 'Who's that guy?' in 10 years."

Lady Gaga previously filmed a cameo for The Muppets in which she and her entourage faced off against Ms. Piggy, but the scene was cut from the theatrical version. Bieber has yet to make his major movie debut, although the documentary about his rise to fame, Never Say Never, was the highest-grossing concert in the United States since 1984. He did, however, get riddled with bullets in an episode with CSI (below, for your viewing pleasure).