Who Wore It Best? Jennifer Lopez vs. Nicole Richie

Two of our favorite multitasking mamis have worn L'Wren Scott's white strapless dress with brunette waves and long bangs. Back in April, Jennifer Lopez wore the dress with black strappy platforms to the Topshop Topman private dinner celebrating the opening of the company's flagship store in New York City. This past weekend, Nicole Richie wore the same dress with silver pumps and House of Harlow 1960 accessories to the launch of the House of Harlow 1960 Holiday Collection at Bloomingdale's South Coast Plaza in Costa Mesa, Calif. So, tell us...