90’s rapper MC Hammer joined Korean pop superstar Psy on stage at the American Music Awards held last night at the Nokia Theatre, to perform a very special version of Gangnam style.

Psy had the honors of closing down the AMA’s last night and took to the stage in a pair of black ‘Hammer’ pants. Half way through his hit song Gangnam style, the singer shouted ‘Stop, Hammertime’ and was joined on stage by the iconic Hammer himself, 50 year old Stanley Kirk Burrell. The two took on an energetic performance of the Gangnam style dance, much to the delight of a star studded audience. Heidi Klum and Kerrie Washington could be seen singing along from the crowd and performer Will.i.am, who introduced the number appeared extremely enthusiastic about the performance.

Psy, whose crazy pop video has had almost 800 million views, made it into the Guinness Book of World Records this morning for the most liked video in Youtube history.

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