"United States of Pop" 2013 is Here: Mashup of the Year's Biggest Songs

Rihanna

Can you guess what the 25 biggest songs of 2013 were?! Don’t put too much energy into it…because…

PIC: Katy Perry & John Mayer Reveal "Who You Love" Cover Art

Katy Perry & John Mayer

Although John Mayer’s latest album Paradise Valley reached No. 2 on the US Billboard charts, the record’s first…

WATCH: Katy Perry Releases "Unconditionally" Music Video

Katy Perry

Three years ago, Katy Perry was shooting whipped cream out of her bra in her video for “California…

Katy Perry Announces World Tour!

Katy Perry

Another famous artist is gearing up to tour in 2014! Over the weekend, Katy Perry announced that she’d…

PIC: Katy Perry Sparks Engagement Rumors With Diamond Ring

Photo by Ian Gavan/Getty Images for MTV

Sunday was a big night for Katy Perry, who performed at the MTV European Music Awards and took…

WATCH: Robert Pattinson & Katy Perry Cozy Up For Karaoke!

Robert Pattinson and Katy Perry

Ever wanted to see what it’s like when old friends Robert Pattinson and Katy Perry have a night…

John Mayer Turns 36: His Relationship Timeline

Photo by Christopher Polk/Getty Images for NARAS

Since stepping into the Hollywood scene with his debut album Room For Squares in 2001, John Mayer has…

Funny Video: Celebs Read More Mean Tweets!

Selena Gomez

It was all about Kanye West on Wednesday’s episode of Jimmy Kimmel Live. Before he arrived, though, the…

Katy Perry & John Mayer Have Disneyland Date

John Mayer & Katy Perry

Things seem to be going great for Katy Perry and John Mayer. Although they’ve broken up twice in…

Katy Perry Calls Out Rihanna For Marijuana Use

Katy Perry & Rihanna

Katy Perry was only trying to give her friend Rihanna a compliment, but in doing so, she flat-out…

WATCH: Katy Perry Is Fierce in "Roar" Video

Katy Perry

The music video for Katy Perry’s new song “Roar” is here! In the vid, the singer and her…

Katy Perry & John Mayer: Bedroom Blues!

Daniel Zuchnik/FilmMagic, Jen Lowery/Splash News

You won’t be hearing Katy Perry Roar in public anytime soon! Despite the singer, 28, and her rocker…

Katy to John & Wilmer to Demi: Most Romantic Tweet of the Week?

wilmer_katy

Celebrities don’t need to be photographed canoodling together to exhibit PDA anymore — they’ve got Twitter for that,…

Katy Perry Talks John Mayer Song Duet

Katy Perry & John Mayer

Uh-oh, John Mayer…remember what happened the last time you recorded a track with your girlfriend (oh, the Taylor…

Katy Perry vs. Lady Gaga: Best New Single?

Lady Gaga & Katy Perry

When two pop artists release new songs at the same time…there’s going to have to be some friendly…

Lady Gaga & Katy Perry Support Each Other After New Music Leaks

Lady Gaga & Katy Perry

It’s a battle of the pop princesses! Fans are patiently waiting the release of new music from Katy…

WATCH: Katy Perry Says Bye to "California Gurls" With New Single Announcement

Katy Perry

It’s been three years since Katy Perry released her summer, chart-topping single “California Gurls,” and now, the singer…

PIC: Katy Perry's Creative Album Announcement

Katy Perry's semi-truck

Okay, you pop music fans — here’s another upcoming album to get excited about! Katy Perry revealed that…

Katy Perry Texted Kristen Stewart After Robert Pattinson Relationship Rumors

Katy Perry

After Robert Pattinson and Kristen Stewart split this Spring, the actor was immediately linked to Katy Perry when …

PIC: Britney Spears & Katy Perry Meet Up at Smurfs 2 Premiere

Britney Spears & Katy Perry

It’s a match made in girl-power pop heaven! Britney Spears and Katy Perry posed on the blue carpet …