Katy Perry

Katy Perry responds to Calvin and Taylor drama

The best Twitter rivalries

Are Katy Perry and Orlando Bloom officially dating?

WATCH: Katy Perry hints at a Zoolander 2 appearance

Guess which star shared this throwback family photo

WATCH: Katy Perry releases magical Christmas song for H&M

Katy Perry named the top-earning female musician

WATCH: Katy Perry invites drunk fan on stage

PHOTOS: Katy Perry has her handprints immortalised in Hollywood

WATCH: Katy Perry almost gets run over by a segway at Burning Man Festival

WATCH: Hugh Jackman performs hilarious Katy Perry lip-sync

Taylor Swift has apologised to Nicki Minaj on Twitter

Katy Perry weighs in to Taylor Swift vs. Nicki Minaj Twitter feud

Bizarre website ranks Top 10 sexiest celebrity feet

Katy Perry beats One Direction and Taylor Swift in celeb rich list

Katy Perry denies '1984' is Taylor Swift revenge song

Katy Perry’s Dark Horse becomes 3rd music video to hit 1billion YouTube views!

Katy Perry adds fuel to Taylor Swift feud with new song ‘1984’

5SOS work on new music with Katy Perry collaborator

Katy Perry set for Grammys performance

Katy Perry reveals Superbowl tattoo after amazing half-time show