Vintage (Hong Kong) Flowing Skirt in Burgundy Silk

This incredibly rich burgundy silk skirt was purchased in Hong Kong in the 70s. It has been worn very lightly, and only once. Perfectly preserved, there are no flaws or stains. The silk is heavy & drapes beautifully. Tag says size 10, but it’s quite small in the waist (see pics for measurements). One side slash pocket, unique button closure at other side.