EXCLUSIVE AT NET-A-PORTER. The gold seashell button at the collar of MARTIN MARTIN's shirt dress is inspired by founder Capucine's grandmother. It's been handmade in France from lustrous black satin and has a self-tie belt to cinch the slightly loose fit. Style it with tonal sandals. Shown here with: [16ARLINGTON Bag id1223228], [Gianvito Rossi Pumps id1221711].