Watch: Katy Perry Delivers First 'Daisies' Live Performance as Song Hits #1 on iTunes - That Grape Juice
Chart Data - “Smile” de Katy Perry sube al #25 en iTunes... | Facebook
Worldwide iTunes Album Chart: #165 Katy Perry - Prism (+40) | Katy perry, Katy perry music, Katy perry photos
Top Music Universe Awards on Twitter: "Wow! #NeverReallyOver by Katy Perry has debuted at #1 on iTunes Worldwide Songs Chart! Congratulations, @ KatyPerry! https://t.co/TvDqdfvp4R" / Twitter
Katy Perry's 'Witness' Shoots To #1 On iTunes Less Than 10 Minutes After Release - That Grape Juice
Stream katysbf | Listen to iTunes Festival: London 2013 - Katy Perry playlist online for free on SoundCloud
Katy Perry Lately! (@katyperrylately) | Songs, Katy perry, Girls talk boys
Katy Perry's 'Never Worn White' Tops YouTube, iTunes Charts in 20+ Countries - That Grape Juice
ITUNES US: Katy Perry - Rise 10 +3 - Charts - BCharts Fórum
Katy Perry's new album Witness faces stiff competition from Ed Sheeran, Hillsong Church, London Grammar on iTunes | PerthNow
iTunesCharts.net: 'Small Talk' by Katy Perry (American Songs iTunes Chart)
Katy Perry | full Official Chart History | Official Charts Company
Katy Perry Surges During Post-Holiday Lull – Rolling Stone
900+ ❤KATY PERRY❤ ideas | katy perry, katy, perry
The Guild's 'Game On' Tops Katy Perry's 'California Gurls' on iTunes
Katy Perry's 'Roar' tops the UK iTunes chart
Walking On Air #1 on iTunes - Katy Perry - FOTP
Katy Perry Rides Off Into The Sunset With Her Lover & Career - The Beacon
iTunesCharts.net: 'Smile' by Katy Perry (American Albums iTunes Chart)
Firework (song) - Wikipedia
Katy Perry's 'PRISM' Party to Launch New iHeartRadio Theater in Los Angeles – Billboard
Katy Perry – iTunes festival review | Katy Perry | The Guardian
