Taylor Swift has put her music back on Spotify, on the same day Katy Perry's new album comes out. The two stars are in a long-running feud which reportedly started as a disagreement over backing ...

Katy Perry has sold a bundle of her music rights ... Two of her songs - Dark Horse and Roar - have more than one billion streams on Spotify. Roar is also one of the most-watched videos of all ...

American pop star Katy Perry has won the longstanding legal battle with Australian fashion designer Katie Jane Taylor (née Perry), who sells clothing under the brand name ‘Katie Perry’.