Christina Aguilera and A Great Big World sang their somber duet “Say Something” at the 2013 AMAs tonight. Check out the performance above.
And here’s what she looked like on the red carpet:
![2013 American Music Awards - Arrivals](http://heavy.com/wp-content/uploads/2013/11/christina-red-carpet.jpg)
See all the best photos of Christina at the AMAs — on and off the stage — here:
And for more American Music Awards performance videos and photos:
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WATCH: Christina Aguilera Performs ‘Say Something’ at AMAs 2013