Michelle Obama Pictures

First Lady Michelle Obama and Samantha Cameron, wife of British Prime Minister David Cameron, talk before having tea in the private residence at Downing Street in London, England, May 24, 2011. (Official White House Photo by Lawrence Jackson)

President Barack Obama watches as First Lady Michelle Obama draws a pint at Ollie Hayes’ Pub in Moneygall, Ireland, May 23, 2011. (Official White House Photo by Pete Souza)

First Lady Michelle Obama dances during a Flash Mob Dance at Alice Deal Middle School in Washington, D.C., May 3, 2011. (Official White House Photo by Lawrence Jackson)

First Lady Michelle Obama greets students following a Flash Mob Dance at Alice Deal Middle School in Washington, D.C., May 3, 2011. (Official White House Photo by Lawrence Jackson)

First Lady Michelle Obama greets guests in the Blue Room of the White House during a Mother’s Day Tea for military spouses, relatives, and friends, May 6, 2011. (Official White House Photo by Lawrence Jackson)

Dr. Jill Biden walks down the Cross Hall en route to a Mother’s Day Tea in the East Room of the White House, May 6, 2011. First Lady Michelle Obama and Dr. Biden hosted the tea for military spouses, relatives, and friends. (Official White House Photo by Lawrence Jackson)

First Lady Michelle Obama receives applause following her commencement address to the 2011 graduating class at the University of Northern Iowa in Cedar Falls, Iowa, May 7, 2011. (Official White House Photo by Lawrence Jackson)

First Lady Michelle Obama participates in the “Pit Crew Challenge” during an event with the President’s Council on Fitness, Sports and Nutrition on the South Lawn of the White House, May 9, 2011. The First Lady visited seven activity stations during the event, which helped promote both the Let’s Move! and Joining Forces initiatives. (Official White House Photo by Chuck Kennedy)

First Lady Michelle Obama stands as the national anthem is played during the Senate Spouses luncheon at the U.S. Botanic Garden in Washington, D.C., May 11, 2011. (Official White House Photo by Chuck Kennedy)

President Barack Obama, First Lady Michelle Obama, and Dr. Jill Biden wait in the Green Room of the White House before the East Room event to launch the First Lady’s and Dr. Biden’s Joining Forces national initiative to support and honor America’s service members and their families, April 12, 2010. (Official White House Photo by Pete Souza)