katy perry

It was an all-star jam at Katy Perry's We Can Survive charity show in Los Angeles last night (Oct. 23). The singer invited her guests -- Tegan + Sara, Ellie Goulding, Sara Bareilles and Kacey Musgraves -- to join her. They all sang along on the the epic, anthemic chorus and did their thing on the verses!

Katy Perry has been vocal about the sadness she faced when she split with husband Russell Brand after only 14 months of marriage. But she is pulling back the curtain on details, revealing that she was so depressed that she holed up in bed for two weeks once Brand revealed he was done with the union.

Here's how we know that Katy Perry is going to love this newest video version of 'ROAR' -- because it's impossible not to!

Katy Perry's 'Unconditionally,' the second single from 'Prism,' is an upbeat, room-filling anthem about letting go and letting love into your life. But what is the song about on a deeper level?

Katy Perry is pulling out all the stops to promote 'Prism' -- literally! The 'ROAR' singer takes a hands on approach to album sales in a new commercial for her third album's Wal-Mart exclusive edition.

Katy Perry's second 'Prism' single, called 'Unconditionally,' isn't a 'ROAR' redux.

Katy Perry roared -- twice!!-- on 'Saturday Night Live' this weekend. The singer, who has also hosted the show before, was only the musical guest last night (Oct. 12), but she once again left a lasting impression, turning the stage into a jungle as she performed her latest hit song 'ROAR.' She also rocked the new song 'Walking on Air,' transforming the set into a club dance floor for about five mi

Selena Gomez covered 'Roar' by Katy Perry in concert ... but it sounded more like a whimper. Sel, what happened?!

Katy Perry doesn't want to make out with Drake. She wants to make out to Drake. His music, that is!

Yes, that's Katy Perry and Juicy J collaborating on 'Dark Horse.' And yes, it actually works.

Katy Perry's new music video for her single 'Roar' is a jungle adventure featuring big cats, elephants and monkeys, and it has angered the animal rights organization PETA.

Katy Perry and John Mayer are getting super serious, but as anyone who's followed their tumultuous relationship knows, they've had quite a few ups and downs -- including quite a few splits -- in between. Thankfully, though, those are behind them ... and they even inspired Perry's smash hit, 'Roar.'

Miley Cyrus and Katy Perry will help make Saturday nights even more exciting very soon. Both artists are among those set to appear on 'Saturday Night Live' this season, NBC confirmed today (Sept. 9).

Katy Perry ends up lost and stranded in the jungle as the result of a plane crash in the video for her latest chart-topper 'ROAR.'

When the President of the United States tweets a note of thanks over your RT of one of his policies and platforms, you know you've made it. Katy Perry retweeted Barack Obama's tweet about Obamacare, encouraging her followers to explore the option, earning a nod and more from the leader of the free world.

Katy Perry closed out the 2013 MTV Video Music Awards with her new hit single, 'Roar,' from under the Brooklyn Bridge ... and she was a true knockout.

The 2013 MTV Video Music Awards are a place for artists to take risks and show off their fiercest style. Unfortunately, sometimes style can be so fierce that it, well, bites. Check out the best and worst dressed ladies of the evening below...

The entire 2013 MTV VMA red carpet heard Katy Perry "ROAR" as she modeled a leopard print dress -- and some wacky grills! At least she kept her hair simple and slicked back in a ponytail. So much for that toned down look we thought she adapted...

The 2013 MTV Video Music Awards will go down tonight (Aug. 25) at the Barclays Center in Brooklyn, N.Y. -- but not all the performers will take the stage inside Jay-Z's home turf. Show closer Katy Perry will perform outside the venue ... and under a bridge! Is this a metaphor for literal trolls to the Internet trolls who keep pitting her against show opener Lady Gaga?

Lady Gaga and Katy Perry will literally be rubbing elbows at the 2013 MTV VMAs.