Marchesa designers Georgina Chapman and Keren Craig gave their signature embroidered and beaded wedding gowns a sliver of sexiness this season. There were more curve-skimming silhouettes, including backless corsets that dipped down into the waist and décolletage that dove under the breastbone. Still, the traditional and more pared-back bride was not forgotten: A strapless standout had a train blooming from a lather of feathered tulle into floral appliqués that delicately blossomed up toward the bust.