WATCH: Christina Aguilera hilariously impersonates Britney, Sia and Miley

Christina Aguilera has officially added impressionist to her long line of credentials by showing off her skills in the new promo video for The Voice.

Though it’s not the first time we’ve seen Christina nail such impressions.

She outdid herself on Jimmy Fallon in earlier this year by giving a phenomenal rendition of the nursery rhyme This Little Piggy in true Britney style.

This time she went one step further and donned full Britney costume.

However, Britney wasn't the only pop star that Christina embodies in the video, it actually begins with The Voice judge dressed as Miley Cyrus.

2On my team, you're gonna learn how to twerk. We're gonna slap it up, flip it, rub it down. It's gonna be a party in the USA, y'all,"she says, while sporting tight top knots and holding a foam finger.

Though our favourite has to be Cher and Lady Gaga.

“I’ve a meat dress that is just going to stick to this thing like saran wrap”.