Vintage slip / nightgown lingerie ILGWU

The most royal purple! Such a beautifully rich color this one is. Has symmetrical slits on the side of the bottom of dress for some leg action. Tag says size 9 so I’d say it’s a medium. Could fit S-L sizes depending on how you want it to fit. Tag says Jennifer Dale and ILGWU so not sure which is the brand. Made in USA.