Michelle Obama Pictures

First Lady Michelle Obama talks with students from William R. Harper High School in Chicago, Ill., in the Diplomatic Reception Room of the White House, June 5, 2013. (Official White House Photo by Chuck Kennedy)

President Barack Obama talks with Tom Grilk, head of the Boston Athletic Association, as he greets first responders and marathon volunteers at Cathedral High School in Boston, Mass., April 18, 2013. The President and First Lady Michelle Obama traveled to Boston to attend an interfaith prayer service dedicated to the victims of the Boston Marathon bombings. (Official White House Photo by Pete Souza)

First Lady Michelle Obama has lunch with midshipmen in King Hall at the U.S. Naval Academy in Annapolis, Md., April 17, 2013. (Official White House Photo by Chuck Kennedy)

President Barack Obama holds Chaplain (Captain) Emil Kapaun’s Easter stole in the Oval Office during a greet with Kapaun’s family in the Oval Office, April 11, 2013. The President and First Lady Michelle Obama met with members of Chaplain Kapaun’s family before awarding him the Medal of Honor posthumously during a ceremony in the East Room. (Official White House Photo by Pete Souza)

First Lady Michelle Obama talks with students from William R. Harper High School in Chicago, Ill., in the Diplomatic Reception Room of the White House, June 5, 2013. (Official White House Photo by Chuck Kennedy)

First Lady Michelle Obama listens to students and counselors during a discussion on youth violence at William R. Harper High School in Chicago, Ill., April 10, 2013. (Official White House Photo by Chuck Kennedy)

President Barack Obama and First Lady Michelle Obama, along with daughters Malia and Sasha, listen as Eddie Floyd sings "Knock On Wood" during the “In Performance at the White House: Memphis Soul” concert in the East Room of the White House, April 9, 2013. (Official White House Photo by Pete Souza)

President Barack Obama talks with Justin Timberlake in the Blue Room of the White House prior to the “In Performance at the White House: Memphis Soul” concert in the East Room, April 9, 2013. At left, First Lady Michelle Obama talks with Queen Latifah and her grandmother, Katherine Viola Bray.

First Lady Michelle Obama and students from around the country participate in the White House Kitchen Garden spring planting on the South Lawn of the White House, April 4, 2013. Mrs. Obama was joined by students from Benjamin David Gullett Elementary School in Bradenton, Fla., Arthur D. Healey School in Somerville, Mass., Sarah Moore Greene Magnet Technology Academy in Knox County, Tenn., the Milton Elementary School in Milton, Vt., and Harriet Tubman and Bancroft Elementary Schools in Washington, D.C. (Official White House Photo by Lawrence Jackson)

President Barack Obama and First Lady Michelle Obama, along with daughters Malia and Sasha, listen as Eddie Floyd sings "Knock On Wood" during the “In Performance at the White House: Memphis Soul” concert in the East Room of the White House, April 9, 2013.