Katy Perry's music career started when she was still a ... 2013: Prism, including singles such as Roar, Unconditionally, Dark Horse featuring Juicy J, Birthday, and This is How We Do.

Katy Perry has treated her fans to an early Christmas present. The 'Roar' hitmaker released a deluxe version of her album, ...

Katy Perry’s 2008 breakthrough single ‘I Kissed A Girl’ is her eighth song to reach a billion streams on Spotify.

With holiday celebrations at hand, Katy Perry has a special gift for her fans – 1432, the deluxe edition of her new album.

The pop icon will be performing some of her biggest hits as well as new music from her latest album 143 in a special show airing tonight ...

You don't need to be a KatyCat to know that Katy Perry has released some of the best songs and biggest hits in pop music history ... and 'Teenage Dream' to 'Roar' and 'Firework'.