The label has been removed from this bra. It may be either a discontinued style of 18-hour bra or a very close copy as sold by Sears and Penney’s and perhaps others. Current catalogs don’t show any 18-hour bras with the satin cups found on this one. Cups are fully lined with the same satin material. My best guess on size is 42C. It looks as though the adjusters have been removed from the straps in the back and the straps sewn back in place at a fixed length.