Christina Aguilera Nails Britney Spears Impression on ‘The Tonight Show’ [Video]

It is no secret that there has always been competition between pop divas Britney Spears and Christina Aguilera. So, leave it to Jimmy Fallon to bring it to the forefront of our minds in a hilarious way.

Aguilera was on  "The Tonight Show" Monday night to talk about the new season of The Voice, but Fallon would not let her go without playing a game called Wheel of Musical Impressions which picks an artist and song. The guest then has to sing the song in said artist's style.

Her first impression was of Cher singing the Folger's coffee jingle.

Then, next it, of course, landed on Spears and the song “This Little Piggy.”