Kristin Cavallari is designing a one-off pair of shoes.

The reality TV star is creating the footwear in an effort to break into the shoe business, and a portion of the money from the sale of the shoes will go towards her charity.

She told People magazine: "I'm designing a shoe for Shoe Dazzle right now, which is like a one time, one deal show which a portion of the proceeds will go to my charity OneKid OneWorld.

"I'm excited about that because I want to have my own shoe line so it'll be like a good first show to get my feet wet with.

Kristin, 23, who made her name on Los Angeles-based TV show 'The Hills' says she has a passion for footwear.

She said: "Shoes are my number one thing."

Kristin is not the only person from 'The Hills' to launch a fashion career - Lauren Conrad has written a style book to help her fans learn more about how to dress.