katy perry

While Miley Cyrus got her grind and her tongue on some of Britney Spears' female dancers at the opening of BritBrit's Las Vegas residency, Katy Perry got her butt on her seat ... and barely moved.

Car crash love. Katy Perry explains that notion and concept in the six-minute, behind-the-scenes footage for her visually stunning 'Unconditionally' video.

Katy Perry, teetotaler? She was, for a period of 90 days, and by choice.

You love who you love, regardless of gender, skin color or religion. That should be the governing principle of life in general -- but it's most certainly the case in the song and video for the John Mayer and Katy Perry duet 'Who You Love.'

Katy Perry has revealed why she and boyfriend John Mayer broke up last spring and the true reason she split with husband Russell Brand in her January 2014 Marie Claire cover. She looks pretty bangin', BTW!

Katy Perry "roared" from Toronto, Canada to be a part of the 'The Grammy Nominations Concert Live!!' (Dec. 6), which announced the 2014 Grammy nominees live from Los Angeles.

If Santa is making a list and checking it twice to find out who has been naughty and who has been nice this Christmas season, well, Rihanna will certainly be on the former list. She posted some, uh, holiday merriment pics on Instagram and a handful of 'em will make the already red-cheeked St. Nick blush even more.

It is with a heavy heart that we report that Olivia Wise, the 16-year-old with an inoperable, aggressive brain tumor who previously covered Katy Perry's 'ROAR' in a recording studio has died.

The 2013 American Music Awards were pretty innocuous and safe, in terms of pop star antics. There was no tongue-and-twerk craziness and things were tame for prime time, network TV. However, the broadcast was not without controversy, as Katy Perry was accused of racism after her performance of 'Unconditionally,' which featured the singer dressed as a geisha.

The 2013 American Music Awards were rife with amazing performances from Katy Perry, Ariana Grande, One Direction, Rihanna, Miley Cyrus, Justin Timberlake, Christina Aguilera, Pitbull featuring Kesha and more. And you can catch them all here!

For the 2013 American Music Awards, our favorite stars dressed to the nines. While some singers, like Ariana Grande, opted to go ultra-glam, others, like Katy Perry, had fun with the red carpet. (We're still obsessing over her book clutch.) Check out the photos of this year's best dressed celebs.

Katy Perry opened the 2013 American Music Awards tonight (Nov. 24) by performing her new single 'Unconditionally' while dressed in full geisha garb.

Katy Perry loves to have fun with fashion, and with her dress at the 2013 American Music Awards, it was no exception! The stunning singer worked the carpet in a polka dot and floral dress by Oscar de la Renta. Our favorite part? The book-inspired clutch she carried!

The elements factor into Katy Perry's 'Unconditionally' video. It looks like a period clip, mixed with some modern flourishes, like, you know, cars.

Katy Perry shared a 22-minute, behind-the-scenes feature from her 'ROAR' video. The making-of featurette is about three times as long as the actual official video, but you get a real sense of Perry's creative process and the joy she felt hanging out with the her co-stars aka wild animals.

Katy Perry continues to turn up on the cover of every magazine known to (wo)man. Her latest cover is the December 2013 issue of the Australian edition of Marie Claire.

When Katy Perry hit an L.A. karaoke stage with pal Robert Pattinson in 2008, little did she know she'd be talking about it now.

File this one under "Mick Being Mick," "Of Course He Did" or just "Ewww."

Congrats to Katy Perry, as her new album 'Prism' debuted at No. 1 on the Billboard Top 200.

Today (Oct. 25) is Katy Perry's 29th birthday, but she was the one giving the gifts. She performed at Lakewood High School in Lakewood, Colo., which was the learning institution that won the contest she launched in the summer. The performance was broadcast on 'Good Morning America,' so it was a wakeup cup of Katy Perry.