5 Celebrity Feuds Gone Wild: Katy vs. Taylor, J.Lo vs. Mariah + More5 Celebrity Feuds Gone Wild: Katy vs. Taylor, J.Lo vs. Mariah + MoreFrom subtweets to side-eye to diss tracks, 'beef' is a pop music tradition of the highest order.PopCrush StaffPopCrush Staff
Katy Perry Serves Up ‘Witness’ Track List: Check Out the Song TitlesKaty Perry Serves Up ‘Witness’ Track List: Check Out the Song TitlesTake a look at the album art and track list for Katy Perry's fourth record, 'Witness.'Erica RussellErica Russell
'She Started It''She Started It'Appearing on 'The Late Late Show With James Corden,' Katy Perry spoke out about her and Taylor Swift's 'Bad Blood.'Erica RussellErica Russell
Migos and Katy Perry Perform “Bon Appetit” on ‘SNL’Migos and Katy Perry Perform “Bon Appetit” on ‘SNL’Dinner is served. C. Vernon Coleman IIC. Vernon Coleman II
"Swish Swish" Collaboration"Swish Swish" CollaborationNicki Minaj links with Katy Perry on this one. Peter A. BerryPeter A. Berry
Katy Signs On To Judge 'Idol'Katy Signs On To Judge 'Idol'The show's being revived by ABC after a 2016 cancellation by FOX.Matthew Scott DonnellyMatthew Scott Donnelly
Katy Perry Explains Shaved Head, Champions ‘Consensual Interaction’ on ‘Ellen’Katy Perry Explains Shaved Head, Champions ‘Consensual Interaction’ on ‘Ellen’The 'Chained to the Rhythm' singer also gives an update on her new album and tour.Matthew Scott DonnellyMatthew Scott Donnelly
Coming to MinnesotaComing to MinnesotaSurprise: Katy's new album is coming in just a matter of weeks. Bradley SternBradley Stern
Katy Perry Goes Full Mrs. Lovett in ‘Bon Appetit’ Feat. Migos Video [Watch]Katy Perry Goes Full Mrs. Lovett in ‘Bon Appetit’ Feat. Migos Video [Watch]'Bon Appetit' is sinister instead of sweet. The murderous, meat-pie-pushing Mrs. Lovett from 'Sweeney Todd' would no doubt find it to be an absolute delight.Rachel KalinaRachel Kalina
All We Have Is This Moment: Katy Perry’s 10 Best Deep CutsAll We Have Is This Moment: Katy Perry’s 10 Best Deep CutsFrom 'Hummingbird Heartbeat' to 'Legendary Lovers,' these are Katy Perry's ten best non-single album tracks. Erica RussellErica Russell
Calling Out KatyCalling Out KatySome see the inclusion as a slight to Swift, Harris' ex-girlfriend.Matthew Scott DonnellyMatthew Scott Donnelly
'Everything Has a Reaction''Everything Has a Reaction''Bad Blood,' released in 2014, was rumored to have targeted Perry.Matthew Scott DonnellyMatthew Scott Donnelly