Rebecca Vallance offers a soigné interpretation of the LBD with this dress called "Le Saint." Crafted from the label's signature bonded crêpe and corded lace, the sheath design has a fitted bodice with bustier-style seam detailing, a scoop neckline, and long unlined sleeves with puffed shoulders. Incorporate yours into your festive-season edit, debuting it at your next cocktail party.