A.U.W. Black & Nude Lace Cocktail dress

Pretty lace cocktail dress, never worn. Brand tag still attached ( no price tag). I bought this years ago but never ended up wearing and now it fits me a little tight. Material is quite stretchy and has an attached cream, or nude toned slip. See photos of measurements. Tagged a size 6. Fits like a medium. Some areas of the lace have what appears to be dark spots but when you zoom in on them they are just variations in the lace, see photos. Seems to be throughout the garment so it must be just part of the lace.