Are you listening John Mayer?
The ridiculous on stage moment happened during Katy's 'Rock in Rio' performance in Brazil.
Katy Perry got kissed by a girl. We're not sure she liked it.
At least she looked cool trying!
Did the 'Dark Horse' singer just give her last album the middle finger?
Katy Perry channeled Elizabeth Taylor in a new photo shoot for Harper's Bazaar, and ET has a sneak peek.
Katy Cats, meet Wolverine.
'I deeply love the Dead's music, and it has inspired me in ways I never imagined,' says Mayer.
The 'Blank Space' singer opened up about friendship, betrayal and her relationship philosophy.
The stunning portraits will be featured in the September issue of Harper's Bazaar.
Katy Perry looks fiercer than ever on the cover of the newest issue of 'Vogue Japan' -- see the stylish pic!
Katy Perry goes even shorter.
The all-male a cappella group takes on Katy Perry, Beyonce, Nick Jonas and more.
It's surprising there are any stars who don't rock Chucks!
