EXCLUSIVE AT NET-A-PORTER.COM. Alexis Mabille's dress is inspired by the full-length couture gown that supermodel Karolina Kurkova wore on the amfAR red carpet three years ago. Updated especially for us in navy, this piece is defined by the shirt sleeve-style ties knotted together at the waist. It's cut from lustrous duchesse-satin and falls to an asymmetric hem. Match your accessories to the shimmering crystal buttons.