Katy Perry - California Gurls (Live on Letterman)

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

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