Ten-year-old Barron Trump looks out the window of the presidential limosouine as his family travels down Pennsylvania Avenue during the Inauguration Day Parade . (Chip Somodevilla/Getty Images)
President Trump posted this photo to Twitter with the caption, ''On behalf of my entire family, THANK YOU! #InaugurationDay'' (POTUS/Twitter)
President Donald Trump smiles with his son Barron as they view the 58th Presidential Inauguration parade for President Donald Trump in Washington. Friday, Jan. 20, 2017. (Pablo Martinez Monsivais/AP Photo)
President Donald Trump and first lady Melania Trump walk during the Inauguration Day Parade Route in Washington, Friday, Jan. 20, 2017. (Carolyn Kaster/AP Photo)
US President Donald Trump and First Lady Melania walk the inaugural parade route on Pennsylvania Avenue in Washington, DC, on January 20, 2107. (JIM WATSON/AFP/Getty Images)
President Donald Trump gives a thumbs up after exiting his car during the inaugural parade. (ABC News/Pool)
A parked limousine burns during a demonstration after the inauguration of President Donald Trump, Friday, Jan. 20, 2017, in Washington. (John Minchillo/AP Photo)
Protesters set a parked limousine on fire in downtown Washington, Friday, Jan. 20, 2017, during the inauguration of President Donald Trump. (Juliet Linderman/AP Photo)
President Donald Trump steps out of his limousine during his inaugural parade on Pennsylvania Avenue outside the White House in Washington, Friday, Jan. 20, 2017. (Andrew Harnik/AP Photo)
The Inaugural Parade proceeds on Pennsylvania Avenue on January 20, 2017 in Washington, DC. (Chip Somodevilla/Getty Images)
Former Barack Obama's official photographer, Pete Souza, posted this photo with the caption ''Farewell.'' (Pete Souza/Instagram)
Pete Souza captioned this, ''President Obama waves from the steps of Executive One helicopter following the inauguration of Donald Trump at the U.S. Capitol.'' (Pete Souza/Instagram)
Pete Souza captioned this, ''Another view of President Obama leaving the Oval Office for the last time this morning (taken with remote camera).'' (Pete Souza/Instagram)
Pete Souza captioned this, ''President Obama leaves the Oval Office this morning for the last time. What a great experience I've had the past eight years.'' (Pete Souza/Instagram)
Hillary Clinton stands as she is recognized by President Donald Trump during his speech at the inaugural luncheon at the Statuary Hall in the Capitol, Friday, Jan. 20, 2017 (Manuel Balce Ceneta/AP Photo)
President Donald Trump with his wife first lady Melania Trump, third from left, waves to Hillary Clinton as he recognizes her during his speech during the inaugural luncheon. (Manuel Balce Ceneta/AP Photo)
President Donald Trump is joined by the Congressional leadership and his family before formally signing his cabinet nominations into law, Friday, Jan. 20, 2107. (AP Photo/J. Scott Applewhite, Pool)
First Lady Melania Trump, President Donald Trump, Vice President Mike Pence and Karen Pence wave goodbye to Barack and Michelle Obama on the West Front of the U.S. Capitol. (Rob Carr/Getty Images)
Former President Barack Obama waves as he boards a Marine helicopter during a departure ceremony on the East Front of the U.S. Capitol in Washington, Friday, Jan. 20, 2017. (Evan Vucci/AP Photo)
A screenshot shows the new look to the POTUS Twitter page. (Twitter/POTUS)
Former US presidential candidate Hillary Clinton leaves after the Presidential Inauguration at the US Capitol in Washington, DC, on January 20, 2017. (AFP PHOTO / POOL / SAUL LOEB)
President-elect Donald Trump waves with Vice President-elect Mike Pence and his wife Melania Trump before the 58th Presidential Inauguration at the U.S. Capitol in Washington. (Patrick Semansky/AP Photo)
President Donald Trump delivers his inaugural address after being sworn in as the 45th president of the United States during the 58th Presidential Inauguration. (Patrick Semansky/AP Photo)
US President-elect Donald Trump is sworn in as President on January 20, 2017 at the US Capitol in Washington, DC. (MARK RALSTON/AFP/Getty Images)
Vice President Mike Pence takes the oath of office on the West Front of the U.S. Capitol on January 20, 2017 in Washington, DC. (Drew Angerer/Getty Images)
Cheryl Edmondson cries as President-elect Donald Trump appears for his inauguration, Friday, Jan. 20, 2017, in Washington. (John Minchillo/AP Photo)
President-elect Donald Trump (R) speaks to Vice President-elect Mike Pence on the West Front of the U.S. Capitol on January 20, 2017 in Washington, DC. (Getty Images)
President Barack Obama (R) greets President Elect Donald Trump on the West Front of the U.S. Capitol on January 20, 2017 in Washington, DC. ( Alex Wong/Getty Images)
President Elect Donald Trump arrives on the West Front of the U.S. Capitol on January 20, 2017 in Washington, DC. (Alex Wong/Getty Images)
See photos from Donald Trump's inauguration on Friday, January 20.