Vintage Grissom Lane dress with tags

Vintage Grissom Lane dress size 7/8 Has tag from JCPenney. Has beautiful copper colored buttons to insinuate the collar. Length is 45 Armpit to armpit is 17” Waist is 17” Dress has no cinch to waist but does have a waist “belt” to tighten up Material of dress is 65% polyester 35% cotton Dress has no wear or stains or rips and is in excellent condition and shape If I was to put a time on this it would be 60’s or 70’s!! Very thin and breathable material