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Published on 19 Oct 2010 | over 6 years ago

"Katy Perry - Teenage Dream (Live on Letterman)"
Get the single on iTunes: bit.ly/kpteendream
Buy the complete 'Teenage Dream' album on iTunes: bit.ly/kpTDdelEX

Music video by Katy Perry performing Teenage Dream (Live on Letterman). © CBS Interactive Music Group, a division of CBS Radio, Inc.

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