Good vintage condition. Probably best fits xs-s, can possibly fit up to a medium (please see measurements; shown on a small).
Approximate flat measurements:
Waist: 12-14.25
Hips: 18.5
Length: 30
*measurements taken on the outside of the piece, and may have some minor discrepancy of human error since most garments are not rigid objects*

Model’s measurements:
Height: 5’6”
Waist: 26”