There are some fabric market in Shanghai, Nan Wai Tan (South Bund) fabric market and Shi Liu Pu Fabric market. The former one can be reached from Nanpu Bridge station by walk, 5 minutes. Get back to Nanpu Bridge to take bus 65 and get off three stops later to Shi Liu Pu. You can find various fabric materials and silk in the market. Many foreign visitors there. Remember bargaining.