I am usually a true 6, 34D and this dress snatches me perfectly. Cut from a breathable twill fabric, it's boned through the bodice to cinch the waist and has a sweetheart neckline with underwired cups. The straps are adjustable for the perfect fit. this dress' has pockets and is fully lined with a zipper in the back. Great material and fit. Could fit size 4 or small as well.