President Barack Obama and his wife, Princeton and Harvard Law School grad Michelle Obama, met when they briefly worked together at Chicago law firm Sidley Austin. They have two daughters, Malia, 13, and Sasha, 10. Here the First Family – along with Conan O'Brien — sings onstage during a Christmas celebration at the National Building Museum on December 11, 2011.
For more on famous marriages, read:
Top 10 Midlife Marriages of 2011
Longest Celebrity Marriages
Shortest Celebrity Marriages
Famous Weddings from the Past
Once Was Not Enough: These Celebrities Married Multiple Times