Katy Perry: A Pop Icon's Journey to Stardom, by Celebrity News

Katy Perry - Wikipedia

Katy Perry Could Be Leaving 'American Idol' Due To Producer Drama

Katy Perry, Pop Cartoon Sprung From the Playbook - The New York Times

Katy Perry Inadvertently Wears Controversial Dress in Taipei (2015/04/30)- Tickets to Movies in Theaters, Broadway Shows, London Theatre & More

Photos of Katy Perry's Beauty Evolution

Katy Perry, Celebrity Wiki

Katy Perry: Confessions of a Pop Princess – The Hollywood Reporter

Katy Perry to Exit 'American Idol' After 7 Seasons

I have some things planned: Katy Perry hints at new music and world tour

Katy Perry and The Weeknd Spark Dating Rumors (2017/11/21)- Tickets to Movies in Theaters, Broadway Shows, London Theatre & More