Vintage Christina Grant polka dot drop waist 80s dress shoulder pads medium

Christina Grant tag Vintage 80s Size tag is faded but looks like it says size 16 - looks like it would fit maybe an 8-12 (please see measurements). Great condition - one spot on skirt (pictured). The inside button around chest is missing. Pit to pit - 19” Smallest part of waist - 34” around Shoulder to hem - 42”