It's a mash-up that will get you out of your seat and dancing!

PSY performed his mega-hit "Gangnam Style" during Sunday's American Music Awards. Just as celebrity attendees The Wanted and Jenny McCarthy were getting down to the beat, a special guest joined PSY on stage -- MC Hammer!

The song segued into Hammer's "2 Legit 2 Quit," with both artists showing off some impressive dance moves,  especially Hammer, who is 50 years old. Check out their performance below:

This isn't the first celebrity PSY's shared the stage with. Last week, the Korean pop star performed with Madonna in Madison Square Garden!

What did you think of the performance? Tell toofab in the comments below!

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