Just before game one of the 2011 World Series, Michelle Obama became the first sitting First Lady to tweet on Twitter, when she sent out a message of support to military families. Video courtesy of the White House.
Learn about Michelle Obama's early life, her years at Princeton and Harvard, and her marriage and family life with Barack Obama. Explore her efforts as the first African-American First Lady, including her Let's Move! campaign and her focus on girls' education.