You've got a big soirée coming up and your ex is going to be there. Only a showstopping, sensational gown will do! Opt for this navy blue one-shoulder gown from Marchesa Notte, which is exquisitely embellished with beading. Your ex doesn't show up, you still look great. Featuring a one shoulder design, a rear zip fastening, long sleeves, beaded embroidery and a front slit at the hem.