katy perry

Off and on couple John Mayer and Katy Perry are firmly back on -- possibly permanently, if he has anything to say about it, because some sources are saying he's asked her to marry him.

John Mayer and Katy Perry are back together in a big way. It's not only good for their careers (they keep gushing about one another to the press to promote their new albums 'Paradise Valley' and 'Prism'), but also for their hearts. Turns out, Mayer is even considering taking the next step with Perry. What's that step?

Katy Perry pulled a Rocky Balboa when she closed out the 2013 MTV VMAs tonight (Aug. 25)! The songstress donned fire-emblazoned boxing trunks and performed her new smash 'ROAR' for the first time in a makeshift boxing ring under the Brooklyn Bridge. She was a champion and all of Brooklyn heard her roar.

Katy Perry is Tarzan and Jane in the 21-second video teaser for 'ROAR.'

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...

Thanks to PEPSI and MTV, Katy Perry fans were able to tweet the #KatyNOW! hashtag to unlock two brand new song titles from 'Prism,' out Oct. 22.

John Mayer loves Katy Perry -- and he also loves her massive new single, 'Roar.' The 'Paradise Valley' crooner couldn't stop bragging about his lady love's new song, as well as his collaboration with her, 'Who You Love.'

Katy Perry sticks to her guns! The 'Roar' singer took another page from Lady Gaga's book, going head to head with Australian politician Tony Abbott, refusing to vote for him because of his stance against gay marriage.

How sweet! Rihanna helped celebrate the release of Katy's new single, 'ROAR' last night at the Lion in New York City.

Katy Perry admitted to being madly in love with John Mayer in her Vogue cover story earlier this summer, despite being broken up at the time. They were seemingly reunited on Fourth of July and now, they get romantic on the song 'Who You Love,' a slow-burning, 'early '80s-inspired soft rock duet.

Katy Perry got revelatory, calling in to 'ROAR' on Ryan Seacrest's morning radio show.

Katy Perry's 'ROAR' leaked yesterday and almost immediately the California gurl was bombarded with allegations of plagiarizing Sara Barielles' 'Brave.' Is there any weight to the accusations?