Vintage rayon Chinese-style sheer blue dress

Vintage (1990's) Chinese-inspired blue dress, diaphanous rayon (not traditional silk), black nylon underslip, blue paisley pattern, Mandarin collar. Slim-fitting size 10, 32" bust, about 60" long from shoulder to hem, two 21" side slits. There are darts on the back side (see 3rd picture). Knotted frog buttons at front neckline are decorative, functioning buttons at back neckline. Carefully stored for thirty years, smoke-free home.