Those evening events are quickly adding up–especially at the end of the year. And when it comes to cocktail hour, finding the perfect dress can be a challenge. Luckily, we rounded up some seriously sexy styles for a night out on the town. From delicate lace to cutout details and fit and flare silhouettes–get ready to own the room. And after you find your dress, rock it with a pair of sexy heels or ankle boots.