Rihanna, Green Day, Usher and more rock Vegas at iHeart Radio festival

Psy brings 'Gangnam Style' to Sin City

By Dave Lewis Saturday, Sep 22, 2012 3:29 PM

Psy has arrived

Psy has arrived

The South Korean rapper-phenomenon performs "Gangnam Style" for the 1 millionth time.  

Photo Credit: AP Photo/Eric Reed