katy perry

Uh oh. BFFs Katy Perry and Rihanna may be on the outs -- and Chris Brown may be to blame.

It looks as though Katy Perry and John Mayer are still very much on! The on-again, off-again couple were most recently spotted together at Perry's birthday bash at The Magic Castle in Los Angeles, and leave it to Perry to get into the Halloween spirt and require her guests to wear costumes. Sounds like her public persona might be mixing slightly with her personal life.

Grab a hankie, and watch this beautiful version of 'Firework' performed by Katy Perry and autistic tween Jodi DiPiazza, at at Comedy Central's 'Night of Too Many Stars.'

Why so serious? John Mayer and Katy Perry looked pretty sad leaving Mayer's 35th birthday dinner at Freeman's in NYC last night (Oct. 16). Is the thought of aging setting in? Was the clam dip bad?

And another John Mayer dalliance bites the dust ... again. Katy Perry reportedly called it quits with the Mayer after he couldn't settle down.

Katy Perry goes Old Hollywood glam in the latest campaign images for GHD, a line of hair products and tools. These images are more glamorous and sophisticated than previous campaigns, but Perry looks just as gorgeous. Her hair is like a diamond in the light, since it's so rich and luxe.

Katy Perry is determined to milk every song, single and thereby dollar that she can from her smash 'Teenage Dream' and its re-released expanded edition, 'Teenage Dream: The Complete Confection.' As a result, not content with just breaking Michael Jackson's singles record, Perry is releasing 'Hummingbird Heartbeat' as the record's ninth official single in the U.K. and Australia, following the succe

No real surprises for best dressed at the 2012 MTV Video Music Awards. Check out these pictures of fashionistas Rihanna, Katy Perry, Pink, Demi Lovato, Rita Ora and Kesha... wait, Kesha? OK, maybe there were some surprises.

According to NPD Group, research shows that there are at least 500 celebrity fragrances released each year. That’s quite an obscene number since… well, are there even 500 celebrities worthy of fragrances out there? Of course with each new fragrance comes the expected Best and Worst lists, and sadly, Katy Perry‘s fragrance “Purr” made the latter.

Katy Perry's parents will be special guest emcees at a youth event sponsored by a southeast Michigan church this weekend.

John Mayer‘s got a lot going on right now. The singer had surgery last week and is now musically silenced for the next six months. He is not able to sing while he recovers from surgery to remove a granuloma from his vocal cords. He was, however, spotted with reported ex Katy Perry over the weekend, as well. Never a dull moment on Planet Mayer.

Katy Perry is the face of Popchips, and the ‘Wide Awake’ singer is also an investor, so she stars in the new fall ad campaign for the light snack. The ads are colorful, with green, blue and red backgrounds, and they are pun-driven. Doesn’t Perry look thrilled to be a part of the Popchips team?