Vtg lady liberty denim bib overalls

vintage made in USA lady liberty denim overalls with green zipper. these are super high quality carpenter bibs. they are tagged womans size 12 but they run small in my opinion. I usually wear 4/6 ,and I wore these for a looser fit ( I would say they fit like size medium? Im sz small but wanted loose fit) please see measurements). small run on back of pants legs,not too noticable. waist 16 in,hips 20 in,inseam 27 in,crotch to top of bib 21 .5