EXCLUSIVE AT NET-A-PORTER. You might know that shirt dresses are trending in a big way for Spring '20, but MARTIN MARTIN's 'Constance' style is the kind that you'll wear for far longer than one season. Made by hand in France, it's cut from lustrous satin in a buttery ivory hue and has a belted waist. The gold seashell button at the collar is a signature of the brand and takes inspiration from founder Capucine's grandmother.