PILL POPPING: Belgian designer Cathy Pill, best known for her colorful prints, will be the guest designer for French catalogue retailer La Redoute’s spring-summer 2011 edition. Pill has designed some 10 items of clothing and accessories that will be featured in a spread modeled by Lou Doillon and lensed by her sister, Kate Barry. Previous designer collections for La Redoute include Azzaro, Sonia Rykiel and Jean Paul Gaultier. The retailer added that it has tapped Robert Clergerie to design a capsule collection of shoes and a handbag due to go on sale in January. La Redoute, which belongs to the Redcats division of retail-to-luxury group PPR, was the top e-commerce site in France in the third quarter, drawing an average of 11.5 million unique visitors per month, according to statistics provided by Médiamétrie/NetRatings, which tracks Internet traffic in France.