I have posted about the robe a changeant, also known as a robe a transformation before. This one is particularly fine, and since they rarely survive intact it bears some looking at. They so often don't come down to us because where dress bodices were quite difficult to remake into a newer fashion, particularly considering how radically shapes altered in the latter half of the 1800s, the skirts of these garments could be changed up to the current taste with much greater ease. So, we are fortunate to see this set of four pieces come to us unaltered from its original state.
With grateful thanks to the Metropolitan Museum of New York.