Cozy up in a cardigan that's adds some color or fresh design detail, it'll take your LBD to the next level.Dress, Diane von Furstenberg, $185, theoutnet.com. Cardigan, Banana Republic L'Wren Scott Collection, $98, bananarepublic.com. Faux-fur scarf, Dennis Basso for QVC, $35, qvc.com. Earrings, Isaac Mizrahi Live! for QVC, $23, qvc.com. Necklace, Pono by Joan Goodman, $238, 866-336-PONO. Cuff, ShopLately, $14, shoplately.com. Pumps, Laylajoy, $140, laylajoystore.com.