January 24, 2013 4:18 pm The First Lady of American Fashion When Michelle Obama took up residence in the White House four years ago, she became not only the first lady of the United States, but also the first lady of American fashion. Check out her style evolution. US & World Videos 1:36 Arizona Senate repeals 1864 abortion ban 1:40 Democrats say Big Oil misled public for decades about climate change 1:45 NYPD enters Columbia University in riot gear to clear protest 4:28 ‘Apples Never Fall' and ‘Jurassic Park' star Sam Neill reveals his real name 3:21 Katy Perry's surprising regret about cheeseburger Met Gala look