Coach (TPR 0.09%) and Lululemon Athletica (LULU -0.10%) can't seem to catch a break these days. Both stocks have plummeted so far this year, down 28% and 26% respectively. The sell-off in these stocks is particularly concerning because of the upward momentum in the broader high-end retail market today. Check out the presentation below to find out why Coach and Lululemon are two of the biggest losers among their luxury retail peers, and why this could create an opportunity for patient investors.