Beautiful Halter Summer Dress

NWT, purchased from a boutique, denim and beading detail around halter top area. 2 button closure behind neck area, and elastic gathering around back. Light semi-sheer fabric on skirt with dark blue lining underneath . Tag says S, but I'm normally a M with a 36c and this still fit a bit loose around the top, so I would say more fit for a L or for D cups.