Aguilera performed some of her biggest hits during the trip, including "Fighter", "Dirrty", "Genie in a Bottle" and "Beautiful".
During the eight-minute road trip, embedded above, Xtina also filled Corden in on some revealing Mickey Mouse Club gossip circa 1995 - [spoiler] had a crush on Britney Spears! - and gave him a quick vocal lesson.
When Corden asked if she was "on the Timberlake train", Christina stuttered and stammered as she attempted to explain that she and Britney both wanted Justin.
"He had swag. Back then he had swag", she said of the "Mirrors" singer. It was a good time...
They also managed to bring in Melissa McCarthy to do Redman's verse in "Dirrty".
Washington Capitals take series against Columbus Blue Jackets 4-2
Dubois managed to get on the scoresheet with a late goal in Game 6, but that was his only mark over the final three games. Forget the D.C. sports trifecta; you could've made a pretty penny letting it ride on six straight postseason wins.
After the song, McCarthy claimed, "I have been here the entire time".
This 8-minute Carpool Karaoke video. just proves how fantastic she is.
Aguilera will appear in the McCarthy-starring Life of the Party-co-written by McCarthy and husband Ben Falcone, who directed-on May 11. "It's a natural jump".
Corden and Aguilera started off with some of the basics, jumping right into the single "Fighter", which allowed Corden to learn how to add the right amount of growl.
The Carpool Karaoke juggernaut just keeps on rolling.