Katy Perry has revealed that she is jealous of fellow popstar Britney Spears.

If you're worried that Katy is jealous of the clothes (or lack of) Britney wears or Britters' (sorry excuse for) hair, then don't worry because all Katy wants is to have teeth like the Womanizer star.

In an interview with Youtube.com, the California Gurls star revealed: “I brush my teeth all the time. I wanted them to be, like, Britney Spears- white. I used to grow up seeing her music videos and be like, 'What does she do? Does she get a new set of teeth all the time? They're so white'.”

And Katy is so obsessed with perfect teeth that the star brushes her teeth “all the time.”

“I'm really anal about that because I like good breath. A turn off for me with guys is, like, halitosis...I'm the kind of friend that's like, 'Stick a piece of gum in your mouth, cos I'm gonna save some friendships for you.

“I'll brush my teeth (after) breakfast, lunch and dinner...I did have 13 cavities at one time, so you can imagine why I'm so freaked out. When I was a kid I didn't really go to the dentist a lot...and when I finally went, they were like, 'You might as well get a new set of teeth.”

What do you think? Tell us on Twitter @areyouentwise and on our Facebook fan page.

Katy gets her buns out...