Katy Perry Quiz: 10 Questions About The 'PRISM' Star

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October 22: Katy Perry shines on stage at the Katy Perry iHeartRadio album release party in Los Angeles, California.

Think you're a Katy Perry expert? Here are 10 questions to put your knowledge to the test!

Here at Billboard, it's our job to keep you informed on what's hot in the world of pop music, and with Katy Perry's new album "PRISM" dropping earlier this week, we've gone all-out to keep you in the loop. From her Billboard magazine cover story, to our "PRISM" track-by-track review, to our rundown of her latest collaborators, it's fair to say we've kept you in the know. Now it's time to see how well you've been paying attention, as we've compiled trivia ten questions to see how well you've been following the pop princess' career.

Katy Perry's 'Prism' Set for No. 1 Debut on Billboard 200 Chart

Been reading Billboard's Katy coverage lately? Seen her "Part Of Me" documentary? Been following her since the early days when she was known as… well, we don't want to give anything away. Think you can get a passing score?