'Gangnam Style' Fans Include Britney Spears, Katy Perry, Vanessa Hudgens; What They Tweeted

It’s become more and more evident that people all over the world are obsessed with Korean rapper Psy’s “Gangnam Style” as the number of hits on the official YouTube video just keeps on climbing. Now Hollywood is going psycho for Psy, with countless celebrities giving props to the song and lyricist through tweets and in blog posts. It seems Josh Groban was right when he tweeted “It’s a Gangnam Stle world, we’re just living in it.” Other celebrities have had their say too.