It reminds me of the Scottish Widows advert from the 90's. (The blond woman with the cape)
I think it would be a nice dress on the right person, but I don't think many people could pull it off. The fabric looks thin and would show up any lumps and bumps and it does look a bit superheroish. It might work for you if you are a bit goth/ alternative. If not I would steer clear.