The fashionistas will appear as guest judges on the new season of "American's Next Top Model" where they were judge the 14 model wannabes this fall.
The "Hills" star is slated to appear on the Sept. 16 episode and is debuting her new fashion line LC Lauren Conrad in Kohl's department stores later this year.
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Kim, who runs a designer clothing store and worked as a stylist, will appear on Oct. 21.
Judge Paulina Porizkova was cut from the show in May after one season as a result of budget cuts, according to the show's producer.
"'America's Next Time Model' is not immune to these financially challenging times," executive producer Ken Mok said in a statement released Monday. "We've had to make significant cuts in every area of the production and, unfortunately, Paulina was a casualty of these cuts. "