10 Reasons Why We’re ‘Thankf...
Dog’s Ears ‘Dance’ to ...
Ellen DeGeneres ‘Stars’ in S...
5 Seconds of Summer, One Direction Perfo...
Meghan Sings Thanksgiving Carols About C...
John Mayer Reveals His Valentine’s Day Plans Sans Girlfriend Katy Perry
The 30 Best Looks From the Grammys Red Carpet: Photos
ROUND 2: Vote For Your Favorite Cover of Katy Perry’s ‘Dark Horse’
Katy Perry Poses as Sexy Pin-Up, Talks Aliens in ‘GQ': See the Photos
Katy Perry Reveals Custom Stage for ‘Prismatic’ World Tour
ROUND 2: Vote for Your Favorite Cover of One Direction’s ‘Story of My Life&...
Katy Perry Reveals Her Pre-Show Rituals
ROUND 1: Vote For Your Favorite Cover of Katy Perry’s ‘Dark Horse’
Who is Katy Perry Bringing on Her ‘Prismatic’ World Tour?
ROUND 1: Vote for Your Favorite Cover of One Direction’s ‘Story of My Life&...
Katy Perry Gets Animated in ‘Dark Horse’ Cover Art
Katy Perry, Lorde, Pharrell, More Added as Grammys Performers
Katy Perry Confirms Upcoming Collaboration With Rihanna
What Are Katy Perry’s New Year’s Resolutions?
Katy Perry and John Mayer Spoof the ’70s on ‘Ellen': Watch
Katy Perry to Host ‘American Top 40′ This Weekend: Details
5 Essential GIFs of Katy and John Riding a Bull in ‘Who You Love’
Fate Under Fire Wins Favorite Cover of Katy Perry’s ‘Roar’
Katy Perry: John Mayer Came up With ‘Who You Love’ Video Concept
U.S. Women’s Ski Team Get Pumped With Katy Perry Medley: Watch
The Most Memorable Celebrity Selfies of 2013: Photos
FINALS: Vote for Your Favorite Cover of Katy Perry’s ‘Roar’
Katy Perry Covers ‘Marie Claire,’ Talks Divorce, Kids, John Mayer
Grammy Nominations: Taylor Swift, Macklemore, Lorde, and More!