Vogue organized a contest on Polyvore to get the plebeians excited about buying things at Fashion’s Night Out. Polyvore users and some Vogue editors will create sets from merchandise by retailers participating in the third annual shopping festival. Each week going forward, Blake Lively, Alexander Wang, and Grace Coddington will pick their favorite two sets. Then Vogue.com readers will vote on their favorite, which will be crowned the winner on September 9. The prize for the best set is a trip to New York with a friend to tour the Vogue office and watch a Vogue photo shoot. So, do promotional events like this make you excited for FNO, part three? Or were you with Cathy Horyn when she said, “I don’t want it to continue”?