Tsuni / GammaUSA, Jordan Strauss/Getty Images for Producers Guild
Have a standout brooch? Follow the lead of Beyonce and Amy Adams and pin it at the base of a deep-V neckline. Not only will it accentuate your cleavage, it's an easy (and unexpected!) way to add sparkle to a little black dress.
At the 2013 Autism Ball Allison Williams worked the blue carpet in a frothy black Oscar de la Renta creation, with a lace bodice and tiers of tulle for the skirt. Delicate drop earrings, a black clutch and bold red lip completed her look.