Michelle Obama: Cardigan

Although her buff arms might be her biggest calling card, the fashionable first lady is known to cover them up with a wide range of printed and brightly colored cardigans, often worn with a chic belt on top. The queen of high-low prefers cozy button-ups by everyone from democratically priced J.Crew to this high-end asymmetrical version by Comme des Garçons, worn in London in 2009.