Katy Perry's 2010 hit 'California Gurls' has joined the Spotify Billions Club after reaching one billion streams on the ...

"Chained to the Rhythm" is a new kind of Katy Perry song, certainly. "Are we tone deaf / Keep sweeping it under the mat / Thought we could do better than that / I hope we can," Perry sings.

Katy and Grimmy chat about British food ahead of her visit to Hull for Big Weekend. The best news since Katy Perry's Chained To ... let's take a look at Katy's best music videos, starting with ...