Katy Perry won't get her crooked lower teeth fixed because she won't "commit" to having braces.

Speaking to the latest issue of InStye magazine, she said: "I want my lower teeth to be perfect. I never had braces, and it's hard as an adult to commit to them. Those teeth are the bane of my beauty existence. It's like the Rocky Mountains in there!"

Although she's not keen on fiddling with her teeth, the 31-year-old sexy pop star has always been happy to experiment with her hair colour and clothes and she is currently seeking inspiration for her next look while she's on a break from touring and recording.

She said: "Right now, I'm in a period of absorbing, of research and development, before I got into the studio and write the songs I want to write. I'm such a fan of Tumblr, and that's where I get a lot of my ideas. My last green colour came from Tumblr, well, and Oscar the Grouch.

"I have so many tools to play with now but I love creating characters and really strong, bold looks. Sometimes when I go out on stage, I feel like a caricature of myself from a cartoon - like a living anime character."