From the waist up is an inverted pleat. From the waist down is known as a kick pleat. Sewn down belt. The belt could also be loose and not sewn down. The back can be cut full and by tightening the overlap of the belt, create some pleated drape. There have been several images of this on SF that have been made up. This isn't so esoteric that a tailor wouldn't know how to make this.
10/5/14 at 10:21am