Watch A Merciless Christina Aguilera Impersonate Britney, Cher, Miley and Sia

Christina Aguilera isn’t here to make friends.

In the latest promo for The Voice, on which she acts as judge, she takes a leaf out of Saturday Night Live’s book by impersonating some of her celebrity rivals as they audition for a spinning seat.

Britney Spears, Miley Cyrus, Lady Gaga, Shakira, Cher and even Australia’s own Sia are all spoofed within an inch of their life by the “Genie in a Bottle” singer, but it’s all in good fun.

Except when it comes to Britney. Then, Xtina means business.

For funsies, check out her spot-on impersonation of Samantha from Sex in the City, as first seen on, you guessed it, SNL, back in 2004.