Very good condition with light overall wear. Seems to have been in storage and unworn. It's marked size 18 1/2 by NPC Fashions Warren, Pennsylvania. 100% polyester. Let me know if you have any questions. Thanks for looking!
Flat measurements:
Armpit to armpit:22.5"
Shoulder to hem:41"
Waist:22.5"
Shoulder:16.5"
Hip:23.5"
Upper Sleeve width:8.25"