Perez Hilton — Katy Perry just trumped Taylor Swift once again! On Thursday, it was revealed that the Roar singer has become the most popular person on Twitter beating Justin Bieber and the Bad Blood artist. Surprisingly, Miz Perry has been named the queen of socia... more info

MTV.co.uk News — Because we just wanted an excuse to see All Time Low's Alex dressed like Katy Perry again... more info

Time — That’s about as many digital singles Perry has sold more info

Perez Hilton — They just can't quit each other! John Mayer and Katy Perry have had an on-off relationship for the ages, and it looks like it's back on. Or maybe they're just good friends who get tipsy together! Related: Katy Sends Sweet Care Package To Little Girl ... more info

TMZ — John Mayer and Katy Perry partied like 18-year-old's ... clubbing till 4:30 AM Thursday, and that's after John raged on stage at a concert earlier in the day with the Grateful Dead. Check out the clip below ... John and Katy were at The Nice Guy inâ€... more info

Perez Hilton — She is not gonna like this… Kim Kardashian West continues to be at the forefront of merging celebrity status with technical startups, but it seems like every time she releases a new app, some other A-Lister comes along to snatch it up! First Demi L... more info

Perez Hilton — Did Madonna Cause A Rift Between Herself & Rocco By Commenting On His Lack Of…'Sausage'? [CLICK HERE] Katy Perry Gave Child Burn Victim Safyre Terry An Amazing Christmas Gift! Get The Adorable Deets HERE! [CLICK HERE] 5 Seconds Of Summer Came For J... more info

Perez Hilton — Katy Perry is a class act! Shortly after Katy received word that eight-year-old burn victim Safyre Terry was a BIG fan, she decided to make the little girl's Christmas extra special. Considering Terry only asked for cards as her Xmas gifts, this must... more info

TMZ — Safyre Terry got what she wanted for Xmas and a whole lot more, courtesy of Katy Perry. Safyre, who lost family members in a horrible arson fire that left her severely burned and caused her to loose a hand a foot, had a Christmas wish -- a card fromâ... more info

Perez Hilton — Not every celebrity can crash Apple's App Store like Kim Kardashian West! Katy Perry tried her luck in the world of mobile gaming with the launch of her freemium game Katy Perry Pop! However, the Firework songstress' game — in which her digital ava... more info