Got a party on the horizon that calls for cocktail attire? A chic choice for cold weather is a winter white ensemble. Case in point: The elegant Chanel Haute Couture one-shoulder dress Blake Lively sported in her first outing with hubby Ryan Reynolds since the birth of their baby. To successfully channel this glamorous look, team an ethereal white or cream frock (blush or latte if you’re attending a wedding) with wavy locks, neutral lipstick and a smoky eye. Let the dress have its moment by opting for barely there ankle-strap heels like Blake’s lamé Stuart Weitzmans, keeping in mind that any metallic or neutral color will work. Finish the look with statement earrings or a cocktail ring—a necklace will disrupt the elegant neckline—and consider yourself cocktail-party ready.