Over the past four years in the District, First Lady Michelle Obama has taken her role in the White House by storm by advocating her husband's policy priorities, promoting her own causes like her Get Fit campaign, and of course, and perhaps most famously, for her fabulous fashion finds! Ever since joining her husband on the campaign trail for the 2008 election, the First Lady has certainly been turning heads in the fashion world.

[Michelle Obama wears Marchesa to the State Dinner Wednesday March 14, 2012 with her husband and British Prime Minister and Mrs. David Cameron via]

After Mrs. O topped Vanity Fair's list of "10 of the World's Best Dressed People," the First Lady has been ranked with some of the world's top fashionistas and her "classic and confident" look has been praised in magazines such as People and Vogue! The First Lady is famous for showcasing her figure and toned arms in empire waist dresses and jewel toned sleeveless tops and is a fan of top tier designers such as Narcisco Rodriguez, Marchesa, Vera Wang and Isabel Toledo. Now that election year 2012 is well underway, Guest of a Guest has compiled some of our favorite looks from Mrs. O winning over Washington in style!