Desperate retailers have been snapping up young celebrities to develop exclusive apparel lines for their chain stores and some have been faring far better than others. Right now the Kardashians and Selena Gomez are at the bottom of the heap because their collections are featured in Sears and Kmart stores which are going out of business left and right. Demi Lovato and Gwen Stefani are doing well with their lines at Target, but the biggest winner of all: Madonna and her daughter Lourdes’s Material Girl collection at Macy’s. Their clothing line has had an excellent year and Macy’s stock is up 27.2%.