Pop star Katy Perry has successfully appealed a Federal Court ruling over the use of an Australian designer’s trade mark ...

It's not every day that a designer's first pair of shoes ends up on the feet of Lady Gaga, but that's exactly what happened ...

Katy Perry mixed athleisure and lingerie while performing at the opening ceremony of the Invictus Games on Feb. 8.

Pop star Katy Perry is facing intense backlash from the family of Carl Westcott, a disabled veteran and entrepreneur, over a ...

Katy Perry's 'The Lifetimes Tour' kicks off in May, here's how to get tickets. (Samir Hussein/WireImage) ...

Katy Perry has been branded 'entitled' and 'unforgivable' after she launched a lawsuit against the dying 85-year-old veteran that she evicted from her $15million mansion. Carl Westcott ...

All the latest news, photos and more on the Firework singer. The American superstar rose to international fame in 2008 with her hit second album One of the Boys, and has since gone from strength ...