One rather adoring fan made the Rock in Rio concert something to remember for the pop star.
Between Lady Gaga and Nicki Minaj, these celebs' green dye-jobs will leave you totally envious.
The sometime couple were definitely "on-again" at Allison Williams' wedding this weekend, where the two also performed separately.
Despite fitting into a couture gown, which she wore for the length of her set, Katy said, “I always feel like an outcast or a black sheep ‘cause I’m no longer sample size.”
And, ladies and gents, he's gonna let his colors burst.
Tay leads the pack in this year's MTV EMAs nominations.
At her first Burning Man, Katy Perry learned the hard way that Segways and the desert don't mix.
Sadly, Katy Perry did NOT send a scathing message attached to a WhatsApp selfie to a hater live in concert on her 'Prismatic World Tour.'
The show takes a closer look at an Australia show from 2014.
Judging by the people Hillary Clinton follows on Twitter, it looks like the Presidential hopeful is officially Team Katy.