Baby, Katy Perry is a firework. And as the singer—mom to 4-year-old Daisy with fiancé Orlando Bloom—turns the big 4-0, allow this look back at her fashion evolution to show you what she's worth.

Katy Perry confirmed she stays in touch with her fellow “American Idol” judges, Luke Bryan and Lionel Richie, after quitting the show last year. “I miss them so much,” the “Firework ...

Katy Perry is ready to light up the stage again like a firework. In fact, the "Woman's World" singer, who just announced an extensive run of The Lifetimes Tour in the United States kicking off in ...