PIX: Celebs at Coachella!

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Click through the gallery below to see what celebs were up to during the first weekend of the…

PIC: Katy Perry Debuts "Slime Green" Hair

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Just when you thought Katy Perry was leaving the hair dye in her “California Gurls” era, she’s made…

John Mayer's Secret Affair With Kelly Monaco!

Photo by: Michael Buckner/Getty Images

Another secret relationship exposed! As Star previously reported, John Mayer’s cheating ways were the biggest problem in his…

Katy Perry Responds to Miley's Twitter Diss!

Photo by: Larry Busacca/Getty Images

It looks like this is a friendly feud, after all! After just three hours, Katy Perry responded to

Miley Cyrus Disses John Mayer in Tweet to Katy Perry!

Miley Cyrus & Katy Perry

Burrrrrn! Miley Cyrus is firing back at Katy Perry after the singer recently talked about her in an…

Katy Perry Catches John Mayer Cheating!

Photo by: Charley Gallay/Getty Images

Less than three weeks after being spotted on a romantic stroll in Hollywood, Katy Perry and John Mayer…

REPORT: Katy Perry & John Mayer Split

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Another one bites the dust?! Katy Perry and John Mayer have reportedly broken up…again. According to E!, it…

Katy Perry, Hilary Duff & More Attend Miley's Bangerz Tour!

Miley Cyrus & Katy Perry

It was a star-studded night at Miley Cyrus Bangerz concert in Los Angeles on Saturday! The singer performed

WATCH: Katy Perry's "Dark Horse" Video Premiere

Katy Perry

Katy-patra is here! Katy Perry channels her inner Egyptian in her new music video for “Dark Horse,” in…

WATCH: Katy Perry Teases Egyptian-Themed "Dark Horse" Video

Katy Perry

Leave it to Katy Perry to keep things interesting…and cultural? After dressing up as a geisha for a…

10 Celebrity Makeovers of 2013!

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2013 was a year of reinvention for many celebrities, whether it be in terms of weight loss, change…

Katy Perry Compares "Who You Love" Video to Kimye's "Bound 2"

John Mayer & Katy Perry

‘Tis the season for…starring in music videos with your significant other? On the Ellen DeGeneres Show Friday, Katy…

WATCH: Katy & John Serenade Each Other in "Who You Love" Video

John Mayer & Katy Perry

They may not be willing to get as intimate as Chrissy Teigen and John Legend for a music…

"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…