A dramatic, strapless gown calls for a balanced silhouette—and a charming half-up, half-down do. It's ideal for all hair types, whether your hair is stick-straight or has lots of natural curl like that of our model. The crown hair was teased slightly before it was pulled back; a few pieces were left loose to soften the bareness of the shoulders. For long-lasting hold, lightly spray hair with L'Oréal Professionnel Texturefreeze. Put on a flirty face—these products from Chanel will help—Drama Lash Maximum Wear Mascara in Jet (but no eyeliner), Irrelle Silky Cheek Colour applied just to the apples of the cheeks, and a bit of Glossimer in Tickled Pink on lips. Lightweight Italian silk-organza dress, $7,500, by Romona Keveza, romonakeveza.com. Platinum-and-diamond necklace, price upon request, by Renee Lewis, 203-629-3303. Platinum-and-diamond bracelet, price upon request, by Harry Winston, harrywinston.com.