Katy Perry Explains Why She Dyes Her Hair Black

Katy Perry Is a Superhero With Cat Sidekicks in PopChips Ad

Are Katy Perry and John Mayer Back Together Again?

In Case You Missed It: Demi Rocks Wango Tango, Kanye Walks Into Sign

Katy Perry’s Love Life Inspiring Next Album: ‘Writing Is Like My Therapy’

Brothers and Sisters Day Quiz: Guess the Celebrity Siblings!

Look Alike Day: Which Celebs Resemble Each Other?

Katy Perry Hints at Next Album, Song Called ‘Double Rainbow’

‘Last Friday Night (TGIF)’ Voted Katy Perry’s Best Music Video!

FINALS: Vote For Your Favorite Katy Perry Music Video

SEMI FINALS: Vote For Your Favorite Katy Perry Music Video

ROUND 2: Vote For Your Favorite Katy Perry Music Video

ROUND 1: Vote For Your Favorite Katy Perry Music Video

‘Idol’ Alum Pia Toscano Found Hope With Help From Katy Perry

Seven Seriously Awkward Kisses of 2012

COVER CONTEST: Britney Spears VS. Katy Perry

Katy Perry and Justin Bieber Make The List Of Yahoo’s Most Searched Musicians of...

Which Superstar Female Was The Most Searched on Yahoo!?

Who Had the Best Twitter Feud of 2012?

Britney Spears and Taylor Swift Rank On Forbes’ Top Earning Women In Music List!

Reasons Why Bruno Mars Should Be Celebrating His ‘Unorthodox Jukebox’...

Cher Lloyd Performs Acoustic Version of Katy Perry’s ‘E.T.’

10 Best Hair Transformations of 2012 — Vote for Your Favorite!

Best of 2012 Pop Mash-Up — Justin Bieber, Rihanna, Katy Perry & More!