Please kindly note that these are body measurements, not garment size since garments are with stretch and drawstring/elastic adjustable:
4 Easy Steps to Determine Sizes:
Measure around the fullest part of the bustline
Measure around the smallest of the waist
Measure around the fullest part of the Hips
Measure from the shoulder at the neck, down straight until the bottom of the crotch, and return to the shoulder