Jessica Simpson has been given a big fashion boost - she'll help pick the winner of Heidi Klum's top designer reality show "Project Runway."

The pop star/actress/shoe designer wore a sparkly mini-dress and joined Klum, designer Michael Kors and style writer Nina Garcia for the finale of the eighth season of the show.

The big celebrity guest reveal came during Mercedes-Benz Fashion Week in New York on Thursday when Simpson joined the regular judges for the big finale at Lincoln Center.

Coincidentally, former "Project Runway" winner, Christian Siriano - who was a favorite of ex-celebrity judge Victoria Beckham - was to debut his spring styles at the same event as this went to press.





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