Kim, Khloe and Kourtney Kardashian are searching for a model for their new denim line.

The reality TV stars are introducing Kardashian Kurves - a plus-size range for their Kardashian Kollection which will be available exclusively at Sears in the US - and have launched a competition to find a face for the collection's advertising campaign.

The prize includes return flights to Los Angeles, one night's accommodation in the city, a professional photo shoot for Kardashian Kurves with one of the images used in an advertisement for the range.

To enter the competition, female hopefuls over the age of 18 must first like Celebuzz and searsStyle on social networking site Facebook then complete an online entry form, and submit a full-length solo photograph - wearing denim jeans and clothes without a trademark or logo - along with a missive of what being 'kurvy' and 'konfident' means to you.

The competition closes on July 30, with Kim, Khloe and Kourtney judging the entries around August 6.

They will base their decision on originality, informational value, and appeal to a worldwide audience.