NWT 1970’s Vintage Maxi Dress w/Front Slit & Shorts

NWT Vintage maxi dress with shorts in a bold black, brown and off white horizontal stripe. Shorts are vertically striped. Fabric is 100% Polyester Says size 16 but I’m not sure that is accurate in today’s sizing Armpit to armpit measures 18” Dress is 56” long, the slit is 31” long and is off to the side on front of dress Shorts are elastic waist-14”, length is 14 1/4”