NEW YORK (Reuters) – Britain's Duchess of Cambridge, Kate Middleton, made Vanity Fair's best dressed list for the fourth time since 2008, the magazine said on Wednesday, in an endorsement of her style choices leading up to the birth of her first child last week. This year's list, which does not rank its chosen style setters, includes China's new first lady, Peng Liyuan, American actress Kerry Washington, singers Justin Timberlake and Beyonce, and Rolling Stone Keith Richards. When asked to name his favorite icon, Richards told the magazine, "Why should I … …