Katy Perry

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.

Katy Perry is Vogue's July cover model, and as part of discussing what she does and doesn't like about herself, the 'Fireworks' singer was caught on video getting her makeup done -- partially by herself, but largely by a professional team.

Singer Katy Perry is friends with Kristen Stewart and Robert Pattinson, but when the collective Robsten broke up, Perry started spending a lot of time with Pattinson -- so much so that lots of people are wondering if they're hooking up. And Stewart is none too pleased.

In a quest to define her style, Katy Perry apparently confused a line with a Venn diagram. (Don't even get her started on isosceles triangles.)

After they were seen canoodling at a party over Memorial Day weekend, rumors immediately ignited that Katy Perry and John Mayer were back together. While this was a rude assumption that assumed neither of them had the self-control to maintain a platonic friendship, well ... it looks like it's probably true.

Katy Perry has been a busy lady. In between platonic wedding-watching with Robert Pattinson, she managed to throw an A-list Memorial Day party -- and one of her invited guests was off-and-on boyfriend John Mayer. Cue the "oh no, not again" eye rolling.

Now that Robsten has broken up, each respective member is handling it in their own way. And while Kristen Stewart is possibly having her life force slowly drained by Taylor Swift, Robert Pattinson is hanging out with good friend Katy Perry -- and stealing all the thunder from the wedding of a random couple.

Remember how Katy Perry, singer of binge drinking anthem 'Last Friday Night (T.G.I.F.),' called out rapper Chief Keef indirectly over Twitter after she heard his track 'I Hate Being Sober' on the radio? That didn't sit well with Keef, who isn't known for having the best judgment.

Katy Perry called out rapper Chief Keef on Twitter indirectly upon hearing his track 'I Hate Being Sober.' She doesn't like that song or that message. Except, you know, when she's the one delivering it.

Funnyman Ricky Gervais -- who has made no secret of his atheism -- recently took to his Twitter feed in the wake of the devastating tornado in Oklahoma to call out some fellow celebs that he felt should've been more tangible with their sympathy.

Several celebs stepped out in high style at the GLAAD Awards, while a few pop singers also hit the right notes in the attire choices. Jennifer Lawrence returned to her adoring public with a new 'do and even better dress, while Katy Perry took her voice role as Smurfette literally with one of the prettiest blue dresses we've ever seen. Then ... there was Drew Barrymore, whose soldier-on-safari dre

Singer Katy Perry is known in part for her ever-evolving hairstyles, but that wasn't enough to extend her contact with the British hair care company ghd, which dropped the pop star as its spokesperson. The reason? According to ghd, she's just not as popular as she used to be. Ouch. That must burn like the worst curling iron mishap.

John Mayer and Katy Perry broke up despite being doting upon one another in public (even when dressed like this), so it came as a bit of a surprise when the news hit. But the reasoning behind the breakup isn't too shocking. New sources say it was mostly due to scheduling conflicts between the two pop stars. Despite, you know, them being able to afford private jets to take them to visit one another