This year's MTV Video Music Awards is filled with bold name like Rihanna, Taylor Swift, Pink, One Direction and many more. However there was one particular star that surprised the audience.

It was none other than the international sensation Psy that made his VMA arrival alongside host Kevin Hart, which caused a roar of applause from the crowd and pausing gasp from Katy Perry.

Psy has become a one of the hottest star on the rise with his hit single "Gangnam Style" that drew in more than 120 million views to date on YouTube.

Fans have caught Katy Perry's expression seeing the singer on stage at the Video Music Awards becoming an instant hot topic.

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