Vintage Gay Gibson Cottagecore Dress Corset Milk Maid Prairie XS-S? 60s 70s

There is no size or fabric content label. I am guessing all cotton. I try to examine each piece carefully and describe to the best of my ability. Lovingly washed, worn and well taken care of. I see no holes, stains, snags or serious signs of wear or repair except for the stitching along the side zipper that just needs to be sewn back up to secure it as seen in the last image.

eBay