The #2 spot on the Billboard charts was enough to make Psy dance "Gangnam Style" topless. The Korean pop singer promised to do the stunt if his song reached the top spot on the US Billboard Hot 100. But as an encore performance during his last concert held at the City Hall Plaza in Seoul, he took off his shirt and did his signature "foot-stomping horse dance" to the delight of almost 80,000 fans. Check out all the mayhem from this Reuters report below.
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