Vintage Boston Maid Dress SZ 14

It’s hard to find vintage clothes in such good condition. Based on the tag I’d say it’s late 70s/early 80s. Beautiful navy color. No rips, tears, stains, discoloring. SZ 14 but vintage runs smaller. Lay flat: L 44 1/2” Sleeve: 18” Armpit to armpit: 17” Waist: 12” with 18” stretch