Another week. Another episode of Project Runway. While we're slowly starting to like this season's set of designer's, the guest judges have had us sold since day one. Our favorite so far has been Miss Natalie Portman in all of her vegan-ess, but Apollo Ohno was very impressive with his selective eye in the Olympic fashion challenge.

Well, this week's judge is Brooke Shield's, so we imagine we'll be swooning over the former Calvin Klein babe as well tonight when she makes her Bravo TV debut.

In this preview clip, watch the crew break a sweat in the gym and then try to persuade Brooke to choose their sketch for the next challenge. Enjoy!