QUIZ: How well do you know Katy Perry?

She's the colourful pop princess with numerous catchy hits to her name.

But how well do you really know Katy Perry?

Test your knowledge with our quiz and find out if you're her ultimate fan.

While you're here, why not test your knowledge on our other 'Ticketyboo' artists...

Click here to test your knowledge on Taylor Swift.

More of a Pink fan? Click here to try our quiz on her.

Love The Killers? Click here to see how well you know the band.

Or, if you adore Bruno Mars, click here to see if you're his biggest fan.