You, a wallflower? Not in this ivory silk-charmeuse halter gown with sweeping train and pearl detail at neck and down the low back, about $1,100, by Watters Brides. Also available in white. Glass bead-and-quartz necklace with Swarovski crystals (worn as a bracelet), $450, by Neckisses. Pearl hairpin, $75, by Colette Malouf.