Squeals erupted on the set of "America's Got Talent" Wednesday when audiences thought pop superstar Justin Bieber was performing on the show.

Turns out it was an eerily similar look-alike named Dani Shay. Here's the kicker -- Dani's a girl -- and a very funny one at that! Check out her spoof of Bieber's breakout hit "Baby" below:

Judges Howie Mandel, Sharon Osbourne, and Piers Morgan seemed to be thoroughly amused. What did you think? Sound off in the comments below and for even more of Shay, check out her YouTube channel.


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