Psy: 'Gangnam Style' with MC Hammer at AMAs 2012!

Psy hits the stage at the 2012 American Music Awards held at Nokia Theatre L.A. Live on Sunday (November 18) in Los Angeles.

The South Korean Internet sensation closed the show with a performance of his viral hit “Gangnam Style,” and was joined on stage by surprise guest MC Hammer!

“How lucky I am!! Gonna be the Closing of #AMAs!! #HammerTime,” Psy tweeted before taking the stage.

Earlier in the night, Psy hit the red carpet and even took time to sign autographs for fans before heading inside to enjoy the show.