Watch Christina Aguilera Nail These Britney, Miley, Gaga And Sia Impressions

She also does a pretty good Cher.

We've seen "The Voice" judge Christina Aguilera bust out her Britney Spears impression before to prove that the old bad blood is all good now. But on Tuesday night, Xtina posted an online video in which she does a gallery of diva impressions that will blow your mind.

"If you're on my team, you're going to learn how to twerk," she says in her best Miley Cyrus twang, her hair twisted up into two tiny buns. "We're gonna slap it up, flip it, rub it down. It's gonna be a party in the U.S.A. y'all."

Nobody is safe -- not fellow "Voice" judge Shakira (who just goes on, and on and on...), a fussy Lady Gaga, a kind of clueless Cher or Sia, whom she imitates by stumbling around while wearing a gigantic white wig.