Cocktail length Sheer Gown with Sash

Periwinkle Blue gown with white sash - strapless - zipper in back - sash can be worn loose as shown in photo for dramatic "swishing", or tied in a bow at the back - fully lined - boning in bodice to help keep shape -pit-to-pit across the front is 16.5" - waist (sash) is 28" - size on tag is 12, but I think it is a smaller fit, so I listed it as a 10 - like new