US' FIRST FAMILY IN PICTURES

Sasha and Malia Obama walk out on stage in full shirts and trendy flat shoes for appearance with their father, President Barack Obama and the first lady, Michelle Obama at the president's election night speech, Nov. 7, 2012, in Chicago. President Obama defeated Republican challenger former Massachusetts Gov. Mitt Romney.

President Obama posted this photo of his wife Michelle and daughters Malia and Sasha on his Facebook page with the caption, "Being married to Michelle, and having these tall, beautiful, strong-willed girls in my house, never allows me to underestimate women."

Sasha and Malia, stand on stage with father, U.S. President Barack Obama and mother Michelle Obama, after Barack Obama accepts the nomination during the final day of the Democratic National Convention at Time Warner Cable Arena, Sept. 6, 2012 in Charlotte, N.C.

Malia and Sasha sit with their father, President Obama to watch their mother and first lady Michelle Obama speak at the Democratic National Convention on television from the Treaty Room of the White House, Sept. 4, 2012.

Dressed in similarly brightly-colored outfits, Sasha Obama and mom first lady Michelle Obama attend the annual Easter Egg Roll in Washington D.C., on April 9, 2012.

Malia Obama, 13, leads her family, President Obama, first lady Michelle Obama and sister Sasha, 11, off the plane at Joint Base Andrews in Maryland on June 15, 2012.

President Barack Obama walks with his daughter Sasha, 11, from Marine One to board Air Force One in Andrews Air Force Base, Md., en route to Chicago on June 15, 2012.

President Barack Obama laughs with daughter Malia after she catches a Nike t-shirt during the Olympic exhibition men's basketball game between Team USA and Brazil on July 16, 2012.

Sasha Obama, 11, sits with her dad, President Barack Obama, on the White House lawn. This photo was posted to President Obama's Twitter account on July 19, 2012.

Sasha Obama, 10, walks with President Barack Obama and first lady Michelle Obama across Lafayette Park on their way to services at St. John's Church, March 18, 2012 in Washington, DC.

Malia and Sasha Obama and their parents, President Barack Obama and first lady Michelle Obama, are joined by entertainers Conan O'Brien, Jennifer Hudson, Victoria Justice and Justin Bieber for a final song at the conclusion of the performances at the annual "Christmas in Washington" gala, Dec. 11, 2011 in Washington, DC.

President Barack Obama, with daughters Sasha and Malia pardons Liberty, a 19-week old, 45-pound turkey, on the occasion of Thanksgiving, Nov. 23, 2011, on the North Portico of the White House in Washington. At left is National Turkey Federation Chairman Richard Huisinga.

Malia Obama, 13, and her sister Sasha, 9, watch the World Cup soccer game between the U.S. and Japan with their dad, President Obama, from the Treaty Room office in the White House residence, July 17, 2011. The President can often be found on the sidelines at his daughters' soccer games

Malia and Sasha welcome their dad and then Democratic presidential candidate and Illinois Senator Barack Obama along with their mom, Michelle, upon his landing in Pueblo, Colo., Nov. 1, 2008.

First Daughter Malia, 10, runs with her new dog, a Portuguese water dog named Bo, as the first family introduces him to the White House press corps on the South Lawn of the White House, April 14, 2009, in Washington, DC.

Malia, 12, follows her dad as they bike on Martha's Vineyard, Massachusetts, Aug. 27, 2010. The Obamas have made an annual trip to Martha's Vineyard, but the White House announced that this year they wouldn't be going.

Malia Obama, 12, and her mom Michelle listen to their guide during a safari in Madikwe Game Reserve in South Africa, June 25, 2011.

Malia Obama, 13, walks with her sister Sasha, 10, and parents Barack and Michelle through Lafayette Square from St. John's Protestant Episcopal Church to the White House, July 17, 2011 in Washington, DC.

Malia Obama, 10, elder daughter of the then-Democratic presidential candidate Barack Obama, holds a microphone alongside her sister Sasha, 7, and mom Michelle, while her dad addresses the Democratic National Convention in Denver, Aug. 25, 2008.

Malia, then 5, talks with her dad, then Illinois State Senator Barack Obama, as her mom holds sister Sasha, 2, in their Chicago hotel suite on the eve of the U.S. Senate Democratic primary, March 16, 2004.