Vintage st very rare dress 2 piece

This dress was purchased from South Korea Very rare A similar design was worn by a famous actress. Please refer to the size chart I have the long version. The model is 173cm Free sz in Korea, but similar to a S in US Xs can also wear it(I am a xs and I can also wear it) The outer robe is brand new And the inner dress was worn once and washed once. So has wrinkles. Otherwise, clean. I am not sure with the outer fabric, but the inner fabric is 100% cotton. Originally payed about $250 including international shipping.