PHOTOS: Nerdy Librarian Katy Perry Hosts The 2010 Teen Choice Awards

California girl Katy Perry has swapped her sunglasses for a pair of vintage specs in these promo pics for the 2010 Teen Choice Awards. The Teenage Dream singer will be hosting the awards show live from Cali, on August 9th. Pitted against each other for best Male Artist are Justin Bieber and his mentor, Usher. Other nominees include Jason Derulo, Drake, and Idol's Adam Lambert, so it's sure to be a close race. Which male pop star do you predict will take home the coveted surfboard? And tell us wh...

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