A lot has changed in the seven years since Katy Perry last went on tour, not least of all, the "Firework" singer's personal life. She hosted seven seasons of American Idol, was named highest-paid ...

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

Katy Perry and Ellie Goulding showed off their chic ... teamed with blue boyfriend jeans and adidas trainers. The Firework singer acessorized with a fluffy brown beret and a black crossbody ...