Michelle Obama played soccer today in D.C. to promote her Let’s Move campaign to fight childhood obesity. And she wore workout clothes! They included black boot-cut yoga pants, a black, ruched, relaxed, long-sleeved tunic top, and either a black tank top or sports bra underneath. See the full look in the Michelle Obama Look Book. In other First Lady news, the white one-shoulder Jason Wu gown she wore to the inaugural balls will go on display in the Smithsonian as part of the First Ladies Collection on Tuesday. [AP]