Dollhouse: Creepy Celebrity Sisters Prank 'AGT'

Simon Cowell's prank on America's Got Talent co-star Sofia Vergara nearly killed him...

Monique and Stefani, known as Duo Rag Dolls, appeared on stage during the...

It's safe to say that the self-styled "ultimate influencers" piqued the judges' interest...

Last night, rehearsals would have been better if someone showed up, Stefani complained in...

"Was that extreme enough for you?" one of the girls yelled at Simon as the wigs flew...

To the amusement of Simon, the two of them changed...

In the end, Harper was one of the young artists Simon dubbed "the Harry...