VIDEOS: Christina Aguilera Performs With 'The Voice' Co-Host Blake Shelton From New Album, 'Lotus'

It was time for another Christina Aguilera, 31, duet on NBC's The Voice, when she teamed up with co-judge Blake Shelton, 36, for their new song, "Just a Fool," which has recently been officially announced as the second single to be released from Aguilera's new album, Lotus.

The new ballad pairs Aguilera's deep, sultry voice with Shelton's country twang, but the duo had fans standing on Monday's episode of The Voice, where they approached each other from different sides of the stage, meeting in the middle to look into each other's eyes as they sang about how each one of them was "just a fool," and then ended the rendition with a hug.

And that's not all. Aguilera will apparently stop at nothing to promote her new album after the relative disappointment of 2010's Bionic, her sixth album. Last week she also performed her duet with her Voice buddy, Cee Lo Green, 38, "Make the World Move."

Don't worry if you think that Adam Levine, 33, will feel left out, though. Don't forget that Levine was the first one to get to buddy up with Aguilera on last year's "Moves Like Jagger."

While Aguilera also wowed fans at Sunday's 40th Anniversary American Music Awards with performances of her three songs, "Lotus," "Army of Me" and "Let There Be Love," it was her weight that got most of the attention, as she appeared on stage to sing in a tight-fitting body suit with sparking stars along the hipline.

While Aguilera has her critics, she has made a point of coming into her own and not making any apologies for her new appearance. Even Levine, who has been rumored to have his share of conflicts with Aguilera, stepped to her defence when critics started going after Aguilera's weight, telling them to "grow up" and lay off her.

Check out Aguilera's duet of "Just a Fool" with Blake Shelton on The Voice here:

Watch Aguilera sing "Make the World Move" with Cee Lo here:

Get a load of Aguilera at the 2012 American Music Awards here:

Get Uinterview's FREE iPhone App For Daily News Updates here.

Get the FREE Uinterview iPad app here and watch our videos anywhere.

For more like this:

Shakira And Usher To Replace Christina Aguilera And Cee Lo On 'The Voice'

VIDEO: Christina Aguilera Flubs National Anthem At Super Bowl

Christina Aguilera Tributes Etta James At Funeral

Adam Levine And Christina Aguilera Release 'Moves Like Jagger'

RECAP: 'The Voice' Selects Final Four

RECAP: 'The Voice Kicks Off Season 2 With A Bang

RECAP: 'The Voice' Ousts Four From Christina Aguilera's And Blake Shelton's Teams