1970’s Grecian gown

Rizkallah for Don Friese LTD gown. Tag says size 12 but I think it fits more like a 6. This gown is in great condition. My husband says it looks like a costume. I had my daughter model it. She is 5’3” and the dress was way too long for her. Shoulder to hem 59 inches. Pit to pit is 18 inches. Waist is 14 inches at the top of the belt.