Black and white have always been a killer team — both chic on their own, but together it's double the impact. Case in point: Naomi Watts in a black-and-white Stella McCartney number in Sydney. Imagine the dress sans the white piping around the neckline; still fab, but not as wow-worthy. So let's take a lesson from Naomi's style book and add an uber-chic black-and-white dress to our wardrobes. And not any dress will do — it must have the same sleekness as the Stella, a bit geometric, with a classy air. Look no further than the 10 dresses we selected below. Wear them with coordinating accessories, like Naomi did, or with a pop of color for mega impact.