The Obama Family

President Barack Obama, First Lady Michelle Obama, and their daughters, Malia, left, and Sasha, right, sit for a family portrait in the Oval Office, December 11, 2011.

President Barack Obama, First Lady Michelle Obama, and their daughters, Sasha and Malia, sit for a family portrait in the Green Room of the White House, September 1, 2009.

Official White House Photo by Annie Leibovitz

President Barack Obama greets First Lady Michelle Obama and daughter Sasha upon their arrival at a barbecue in celebration of his 49th birthday on the South Lawn of the White House, August 8, 2010

President Barack Obama, with mother-in-law Marian Robinson, daughters Sasha and Malia, and First Lady Michelle Obama, react as they push the button to light the National Christmas Tree during a ceremony on the Ellipse in Washington, D.C., December 9, 2010.

President Barack Obama and First Lady Michelle Obama wave to the crowd from the South Portico of the White House during the annual Easter Egg Roll, April 25, 2011. Daughters Malia and Sasha, Marian Robinson, and Bo, the Obama family dog, joined the President and First Lady on the balcony for the national anthem before participating in the activities on the South Lawn.

President Barack Obama and First Lady Michelle Obama embrace following the official swearing-in ceremony in the Blue Room of the White House on Inauguration Day, January 20, 2013. Standing, from left, are daughters Malia and Sasha and Supreme Court Chief Justice John G. Roberts, Jr.

President Barack Obama and First Lady Michelle Obama walk with their daughters Sasha and Malia, right, to attend an Easter service at St. John's Church in Washington, D.C., Sunday, March 31, 2013.

President Barack Obama and First Lady Michelle Obama, along with daughters Sasha and Malia, stand in former South African President Nelson Mandela's cell as they listen to former prisoner Ahmed Kathrada during their tour of Robben Island Prison on Robben Island in Cape Town, South Africa, June 30, 2013. Leslie Robinson is pictured at left.

President Barack Obama and his daughter Sasha assemble burritos during a Martin Luther King, Jr. Day of Service event at DC Central Kitchen in Washington, D.C., January 20, 2014.

First Lady Michelle Obama, with daughters Sasha and Malia and family pets Bo and Sunny, receives the official White House Christmas tree at the North Portico of the White House, November 28, 2014.

President Barack Obama and First Lady Michelle Obama follow Marian Robinson and Malia Obama as they board Air Force One at Maxwell Air Force Base for departure from Montgomery, Alabama, following a trip to Selma, Alabama to commemorate the 50th Anniversary of Bloody Sunday, March 7, 2015

President Barack Obama, First Lady Michelle Obama, and daughters Malia and Sasha pose for a family portrait with Bo and Sunny in the Rose Garden of the White House on Easter Sunday, April 5, 2015.