U.S. first lady Michelle Obama and daughter Malia listen to their guide during a safari in Madikwe Game Reserve June 25, 2011. ----REUTERS/Charles Dharapak/Pool
U.S. President Barack Obama and his daughter Malia walk down the steps from Air Force One moments after landing in Santiago March 21, 2011. Obama arrived from Brazil as he continues his three-country tour of Latin America. ----REUTERS/Luis Hidalgo
Malia, daughter of US President Barack Obama and First Lady Michelle Obama, sits with Bo, the family dog, while her parents read to children during the annual Easter egg roll April 25, 2011 on the South Lawn of the White House in Washington, DC.
---MANDEL NGAN/AFP/Getty Images
President Barack Obama, right, first lady Michelle Obama and daughters Sasha, left, and Malia, arrive at the international airport in San Salvador, El Salvador Tuesday March 22, 2011.
Malia Obama, left, finishes an ice cream cone with her father, President Barack Obama, right, who is partially obscured by an agent, as they exit the Thomas Sweet Ice Cream shop in the Georgetown neighborhood of Washington, on Father's Day, Sunday, June 19, 2011.
----AP Photo/Jacquelyn Martin
WASHINGTON, DC - MARCH 23: U.S. First Lady Michelle Obama (L) daughter Malia (R) walk towards the residency after they returned to the White House March 23, 2011 in Washington, DC. The first family has returned from a visit to South America.
---- Alex Wong/Getty Images
US President Barack Obama, along with others, sings "Happy Birthday" to First Lady Michelle Obama as their daughters Malia (R) and Sasha look on as they arrive to take part in a community service project at Stuart Hobson Middle School in celebration of the Martin Luther King, Jr. day of service in Washington, DC, on January 17, 2011. ----JEWEL SAMAD/AFP/Getty Images
Malia Obama,the daughter of US President Barack Obama and First Lady Michelle Obama, makes her way to board Marine One May 27, 2010 on the South Lawn of the White House in Washington, DC. Obama and his family were heading to Chicago to spend the Memorial Day weekend.
----MANDEL NGAN/AFP/Getty Images
Malia Obama and her father in Montana, July 4, 2008