How well do you know Katy Perry?
There are many people who know a lot about Katy Perry, mostly family and friends, but also lots of people who don't know a thing about her, so it's okay if you didn't do well on the quiz.
Do YOU know a lot about Katy Perry? Do you have the right to say "I know so, so, so, so, so much about Katy Perry"? Well, thanks to this cool quiz, in a few minutes you will find out!