Katy Perry

This might be the sweetest video we have seen all week! 5-year-old Kai Langer, aka the most adorable little kid on the planet, stopped by the 'Ellen DeGeneres Show' to chat with the host and show off his rendition of Katy Perry's anthem, 'Roar.'

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

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.

Ever since Katy Perry announced she was teaming up with mall retailer Claire's for an accessories line, we've been waiting to get a look at the Perry-branded items, since her personal style is so unique and was bound to assert itself in these pieces. Well, photos of the earrings, necklaces and more have leaked online.

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.

Katy Perry and John Mayer split only weeks ago, with the singer declaring that her fans are her boyfriends. Has she already moved on with a rapper?

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.