Organza is a thin, plain weave, sheer fabric traitionally made from silk, the continuous filament of silkworms. Nowadays , though many organzas are woven with synthetic filament fibers such as polyester or nylon, the most luxurious organzas are still woven in silk. Silk organza is woven by a number of mills along the Yangtze River and in the province of Zhejiang in China. A coarser silk organza is woven in the Bangalore area of India. Deluxe silk organzas are woven in France and Italy.