Did Mariah Carey lip-sync during her BET Awards performance?

Mariah Carey sure looked fabulous during her performance at the 2013 BET Awards, but was that because she wasn't actually singing? That's what many people on Twitter were claiming after she performed her song "Beautiful" with Miguel and Young Jeezy, and thus far no clear answer has been revealed.

Of course, Carey's hubby Nick Cannon is standing behind his wife and saying that she what she delivered on stage is real. " Everything you see is all her, whether it's a collaboration when the lights hit, how she enters, she's doing all of that," he tells E! News.

It's not unheard of for performers to lip-sync at live events (just look at Beyonce), but the assumption is typically that artists sing live. Watch the video above, and vote below on what you think happened in this latest instance.

Photo/Video credit: BET/Getty Images