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 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...

Katy Perry and John Mayer got back together just in time to promote their new albums. Isn't it great when romance is so convenient? The duo each have records coming out soon, and a track from Mayer's 'Paradise Valley,' called 'Who You Love,' has hit the web -- and it features none other than his on-again off-again love.

The selfie is the highest art form of the social media world, and occasionally celebs like to share self-taken photos other than naked snapshots or flattering, filtered full makeup pictures.

Katy Perry's new single, 'Roar,' is getting a ton of press -- unfortunately, for mostly bad reasons. The undeniably catchy tune is catching the attention of music critics and Lady Gaga fans, who keep pointing out that it sounds almost identical to Sara Bareilles' 'Brave' -- igniting a "stan war" between the Katy Cats and the Little Monsters. So how did the trifecta of musical ladies resp

The gold truck that Katy Perry hired to promote her upcoming album, 'Prism,' was hit by a drunk semi-truck driver.

Not understanding how jokes work, pop singer Katy Perry is none too happy about comedian and ex-husband Russell Brand making jokes about her and their former marriage. Even though, you know, that's how comedy works. And we have a feeling she won't like his most recent quip.

Katy Perry has long been a vocal fan of classic rock legends Queen, even paying homage to the band with the name of her latest fragrance, Killer Queen. However, she apparently also paid homage to someone else, according to the Beyhive: Queen Bey herself, Beyonce.

There was once a time when pop star Katy Perry would stick her neck out for her celebrity pals, but then being a nice person who helped others ended up being all for naught -- so she's given up her righteous ways. Thanks a lot, Rihanna. Way to ruin it for everyone.

A random encounter with newly-reunited couple John Mayer and Katy Perry in a New York City guitar shop last week brought one lucky fan much more than just a great photo: Mayer actually bought the aspiring young musician a guitar on the sly.

You may recall that multi-hued hair chameleon and singer Katy Perry was recently embroiled in a lawsuit with the company ghd (Good Hair Day), which dropped her contract because she's supposedly just not that popular anymore. Katy sued -- and now we know she won.

For someone who likes to call his relationship "private" when asked about it, John Mayer had no problem gushing about Katy Perry onstage in front of a slew of cameras this weekend. It's almost like he had an album to promote or something!

In our least favorite couples trend, recently reunited duo Katy Perry and John Mayer showed off their patriotism in matching stars and stripes outfits. Blergh. Remind us again why it's disrespectful to let a flag touch the ground, but it's totally cool to wear it all over your body?

After two splits in under a year, Katy Perry thinks the third time with John Mayer will be the charm. To help hedge her bets a little, though, she's established some ground rules that we're sure he'll follow for a week or so.

Actor and singer Jared Leto is no stranger to drag, having dropped a serious amount of weight and shaved his eyebrows for a role in the upcoming 'Dallas Buyer's Club,' but looking like Katy Perry? Is most likely new to him.

Today (June 25) the celebs made wishes, screwed up at the drive-thru, skateboarded and lusted after Jan Brady -- among other things.

Seems Katy Perry just can't stay away from John Mayer -- not only did she recently admit to Vogue that she's still "madly in love" with the singer, she was also spotted with her lips on his lips this weekend.

Katy Perry makes her debut as a Vogue cover girl in July, playing a high-fashion siren/farmer's daughter (we think). But in the accompanying interview, she talks about the loves of her life: ex-husband Russell Brand and on-and-off boyfriend John Mayer.