This vintage 60s mod 3 piece Skirt set is incredible. Set comes with a one piece shorts romper, a maxi skirt, and a mini skirt. there are no tags so here are, 15 inches across waist. zips in back.

maxi skirt: 37.5 in length, 14.5 waist. 2 lined pockets and buttons down the front.
One-piece shorts romper 18.5 inches from pit to pit, 23 inches in length, leg holes are 10 inches wide. snaps under crotch. zips up back.

all in great shape. tiny spot on the hem of the maxi skirt. see pic.

I think this would fit a modern day 4/6
sold as a set