They can do a lot more than merely judge a reality competition together.

At last night's American Music Awards, Adam Levine and Christina Aguilera anchored a rendition of their hit, "Moves Like Jagger," which had famous faces in the crowd up and dancing. Watch this duo belt out the track on stage now, as Jaden Smith, Selena Gomez, Taylor Swift and others groove to it while watching from the audience:

Unlike its nemesis on Fox, there's no judging controversy on The Voice. At least not yet.

Adam Levine, Blake Shelton, Christina Aguilera and Cee Lo Green will all return for the competition's second season.

Posted in: Christina Aguilera

The final four contestants on The Voice took to the stage a total of eight times last night.

We were treated to one original song by Dia, Javier, Beverly and Vicci; along with one duet with their Coach. The praise flowed all night from the judges, but viewers will get the final say.

Posted in: Christina Aguilera

Christina Aguilera Biography

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Christina Aguilera: The dirrrty one always has a place in our hearts. She's a great, great singer. The beauty married Jordan Bratman a... More »
Born
Birthplace
Pittsburgh, Pennsylvania
Full Name
Christina María Aguilera

Christina Aguilera Quotes

It's kind of hilarious! I've never fit into an E-cup before. I look at my husband and go, 'Guess what size this bra is?' And when I tell him, he's just amazed. We keep the tags that prove it, to look back for memory's sake!

Christina Aguilera [on her breastfeeding bust size]

Oh, my God, candy! I had a huge craving for candy toward the end of the pregnancy, from Starbursts to Skittles. I actually took a picture of myself with my big belly in a little lingerie top, surrounded by bowls of the candy I like

Christina Aguilera [on pregnancy cravings]