These three stars know that a tight topknot is the perfect balance between trendy and dressy. Kim Kardashian went for a sleek allover version at a recent event, while Fergie tousled her bun a bit more. As for Jennifer Lopez, she sported a more carefree and casual rendition. The ballerina-esque look is a great option for day-to-night styling, and will undoubtedly be seen at cocktail parties everywhere this holiday season. No need to get tied up in knots to re-create it, either: just apply a shine-enhancing gel to the hair, use a nylon bristle brush to create smoothness, and pull the hair up into a bun high on your crown.