Polyvore has always managed to wrangle an impressive assortment of fashion people to guest on their site, answer questions, and judge set contests. They recently had one of Rihanna and Willow Smith stylist's, Rob Zangardi, on the site, and next week Janie Bryant will be the site's featured "style expert." But today marks the e-commerce/collage site's biggest fashion coup: Kate Moss. The supermodel graces the cover of Bryan Ferry's latest album, making her a "Roxy Girl," as the girls who cover Ferry's albums (including Jerry Hall in '75) are known. (Ferry's group, Roxy Music, disbanded in '80s, got back together, and broke up again in the early oughts.) The challenge: To create a "Roxy Girl" set inspired by photos of Moss from the Ferry album shoot. The contest is live now and lasts for four days. Moss will choose her two favorite sets on November 8th. Winners will receive a deluxe edition album and 40 page coffee table book featuring pictures of Kate Moss signed by both Kate Moss and Bryan Ferry. So start collage-ing and get that Moss stamp of approval. We recommend sneaking in some fringe and floral.