The Little Black Dress may be a stereotype, but it's a classic closet staple for a reason. Sleek, timelessly chic and incredibly versatile-done right and a black cocktail dress can last you for years. If you're after something classic that won't date, look for clean lines and an unfussy style. Phillip Lim is the master of minimalism and a polished yet understated look, while Carven consistently brings ageless chic. But there's no need to keep it basic: DKNY's leather options bring a cutting edge cool, while Moschino can be relied upon for statement prints and a playful style.