Vintage maxi silky muumuu dress in grey purple colour

Beautiful light silky maxi muumuu dress. The colour is a nice grey purple colour. Like a smoky purple. No label so not sure what the fabric is., but has a lovely drape to it. It has fabric covered buttons, pleated front and back, sweet ties at neck. The length 56 inches long. It’s hard to measure the width but it’s very wide I would guess it would fit a L to XXL depending on the fit you’re looking for.