Katy Perry

Katy Perry has finally and officially confirmed what the world knows and is painfully obvious -- that she and BF John Mayer have split.

Katy Perry called in to the show to talk about her new video for "Birthday" and what it was like getting dressed up -- and down -- for the hilarious clip.

Think you know Katy Perry better than Katy Perry herself? Well, a Katy Perry-o-phile named Emily thought she did and competed against the singer on a hilarious faux game show skit on 'Jimmy Kimmel Live!' last night (April 21).

Katy Perry is now the proud owner of an adorable dog, she announced via a cute-beyond-words Instagram pic of her new pet.

Move over, Robert Pattinson, Riff Raff and John Mayer, the rumored hookups and official ex of Katy Perry. The singer and supreme catch may be dating DJ Diplo.

Fans, next time you see Katy Perry, you might want to think twice about taking out your cellphone and trying to grab a selfie with the pop superstar.

Katy Perry didn't attend the 2014 Kids' Choice Awards this year, but she did hint that she planned to dye her hair slime green, which is the show's signature prank and color. She wasn’t kidding. The singer has gone green, and the hair hue is perfect for spring.

One of pop music's biggest stars will be collaborating with one of country music's finest this June. Billboard reports that Katy Perry and Kacey Musgraves will team up for the 'CMT Crossroads' series which will air June 13, 2014.

In an interview with Australian radio station SAFM, Katy Perry was asked the inevitable question about her "competition" with Lady Gaga for pop chart dominance, since the two singers, while markedly different in style and sound, dropped singles and albums around the same time last year.

Amazing x 20 x 10! That's the formula for this cover of Katy Perry's latest smash 'Dark Horse,' which is reimagined in 20 different styles in 10-second songs.

Katy Perry really is a do-gooder! The singer must be trying to earn sainthood, since she reportedly gifted her team of assistants with electric cars.

On February 28, 2014 the faculty of Red River Elementary decided to do something special for their students. They pulled off a dancing flash mob to the Katy Perry tune "Roar."