Michelle Obama

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First lady Michelle Obama waves as she appears at the podium for a camera test on the stage at the Democratic National Convention inside Time Warner Cable Arena in Charlotte, N.C., on Monday, Sept. 3, 2012. (AP Photo/Jae C. Hong)

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The First Lady of The United States, Michelle Obama welcomes Kal Penn on the stage to film a campaign video during the Democratic National Convention. (Barbara Salisbury/ The Washington Times)

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The First Lady of The United States, Michelle Obama, does an interview before her speech tomorrow at the Democratic National Convention. (Barbara Salisbury/ The Washington Times)

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The First Lady of The United States, Michelle Obama, does a sound check in preparation for her speech tomorrow at the Democratic National Convention. (Barbara Salisbury/ The Washington Times)

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The First Lady of The United States, Michelle Obama, does a sound check in preparation for her speech tomorrow at the Democratic National Convention at the Time Warner Arena in Charlotte, N.C., on Monday, September 3, 2012. (Barbara Salisbury/ The Washington Times)

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First lady Michelle Obama points to supporters at the War Memorial Auditorium in Fort Lauderdale, Fla., on Wednesday, Aug. 22, 2012. (Associated Press)

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** FILE ** First lady Michelle Obama turns and runs after catching a pass while participating in her "Let's Move!" campaign and the NFL's Play 60 campaign festivities with area youth in New Orleans on Sept. 8, 2010. (AP Photo/Gerald Herbert)

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President Obama, first lady Michelle Obama and their daughters, Sasha and Malia, walk from the White House to attend services at a nearby church on Sunday. The president and Mitt Romney are facing off over Medicare on the campaign trail. (Associated Press)