Katy Perry

Kat McPhee's feel-good throwback gem is a new must for your summer playlists.

The Smithsonian's new National Portrait Gallery features paintings of pop's leading ladies.

Broadway stars will honor the works of Lady Gaga and Katy Perry with a performance series this summer.

Taylor Swift's endlessly teased, Sin City-inspired music video for "Bad Blood" has finally arrived! Watch it here.

The 2015 Billboard Music Awards took over Las Vegas on Sunday (May 17), and while there were many winners, it was Taylor Swift's night.

We compiled a list of 50 celebrities who go by a name different from what they were given at birth.

Dunno about you, but I LOVE me a Cheesy Gordita Crunch every once in a while....apparently, KP had a craving too, while on tour in Tokyo. She waited an HOUR online at a Taco Bell there...but she had her black silken surgical mask on...so while she may have had high sodium levels for the day, she did not get SARS...

Katy Perry perhaps took a page from her frenemy Taylor Swift's book and attempted to trademark the iconic Left Shark from her 2015 Super Bowl performance -- only she was denied.

For better or for worse, these ensembles are permanently etched into the MTV Movie Awards' canon.

Watch this promo video of stars like Katy Perry and Britney Spears singing at recently shuttered karaoke bar Dimples.

Whoops! Katy Perry accidentally gave millions of fans her phone number.

The 2015 Kids' Choice Awards are here, and so many of our fave artists are up for Orange Blimps this year that we don't even know what to do with ourselves!