EXCLUSIVE AT NET-A-PORTER.COM. Alexis Mabille's dress is designed for the bride looking for something a little less traditional for herself or her bridesmaids to wear on the big day. It's made from glossy silver satin-twill with shirt sleeve-inspired ties at the waist and a boned bodice that means you needn't worry about wearing a bra. Pick out the shimmering crystal buttons with a pair of metallic sandals and delicate drop earrings.