First lady Michelle Obama, center, embraces daughter Sasha, 9, as she is surprised by everyone singing "Happy Birthday" to her as she and President Barack Obama arrived at the Stuart Hobson Middle ... more 
First lady Michelle Obama, center, embraces daughter Sasha, 9, as she is surprised by everyone singing "Happy Birthday" to her as she and President Barack Obama arrived at the Stuart Hobson Middle School in Washington to observe the Martin Luther King Jr. Day holiday by participating in a community service project, Monday, Jan. 17, 2011. Daughter Malia, 12, is at right. The first lady turns 47 today. less 
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Associated Press | Photo By J. Scott Applewhite
Mon, Jan 17, 2011 1:06 PM EST