Christina Aguilera, A Great Big World Perform "Say Something" at AMAs

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Christina Aguilera and A Great Big World performed their hit collaboration "Say Something" at the 2013 AMAs Sunday, live from L.A.'s Nokia Theatre.

With her hair in a braid and wearing a muted black dress, Xtina offered a fairly stripped-down performance compared to the night's more gaudy showcases.

Watch her do her thing along with the group below ...

Following A Great Big World's performance with Aguilera on The Voice, last week, "Say Something" debuted at No. 1 on Billboard's Digital Songs chart.

The band's debut full-length album Is There Anybody Out There? will be released in January 2014 and has fans already waiting anxiously in anticipation.

What did you think of their AMA performance?


Still can't get over that they paired up!! This behind the scenes video of AGBW and Christina is sooo cute

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Christina Aguilera Biography

Awesome Aguilera
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 »
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]