Los Angeles County Museum of Art. (M.57.24.12)
Description from An Elegant Art: Fashion and Fantasy in the Eighteenth Century. Los Angeles:Los Angeles County Museum of Art, 1983. "Gold embroidered bows and garlands, made with thin strips of siler gilt, on whte cotton muslin; probably manufactured in India for English market; gold fringe at hem; sleeves shaped over the elbow and finished with self-ruffle" (170).
This looks like a very comfortable dress that would not require the arms to be held stiffly.