Chelsea Clinton through the years.

Chelsea Clinton, the daughter of then Democratic presidential hopeful Hillary Clinton, campaigns for her mother at Denizens Brewing Company in Silver Spring, Maryland on April 21, 2016.

Cindi Leive, Chelsea Clinton, Lena Dunham and America Ferrera attend the Glamour And Facebook Host Conversation With Cindi Leive, Chelsea Clinton, Lena Dunham, America Ferrera At The Democratic National Convention on July 26, 2016 in Philadelphia, Pennsylvania.

(L to R) Former President Bill Clinton, Marc Mezvinsky, Chelsea Clinton, holding her newborn son Aidan, and Democratic Presidential candidate Hillary Clinton exit Lenox Hill Hospital, June 20, 2016 in New York City.

Chelsea Clinton gave birth to Aidan, her second child, on June 18.

Singer Katy Perry appears on stage with Democratic presidential candidate Hillary Clinton, Chelsea Clinton and former U.S. president Bill Clinton at the end of the Hillary Victory Fund "I'm With Her" benefit concert at Radio City Music Hall in the Manhattan borough of New York City, March 2, 2016.

Chelsea Clinton and her father, former President Bill Clinton look on as Democratic presidential candidate Hillary Clinton speaks at a campaign rally at the Clark County Government Center in Las Vegas, February 19, 2016.

Chelsea Clinton, her husband Marc Mezvinsky, and their daughter Charlotte Clinton Mezvinsky at Lenox Hill Hospital in New York, Sept. 27, 2014.

Chelsea Clinton announced the news of her daughter's birth on Twitter and Facebook early Saturday, saying she and her husband are "full of love, awe and gratitude."

Former Secretary of State Hillary Rodham Clinton, left, and former President Bill Clinton, right with their granddaughter Charlotte Clinton Mezvinsky, Sept. 27, 2014, at Lenox Hill Hospital in New York.

The Clintons's daughter, Chelsea, gave birth Friday night to her first child, Charlotte.

Former first daughter Chelsea Clinton, 30, married Marc Mezinsky, 32, in a lavish ceremony at Astor Courts in Rhinebeck, N.Y., July 31, 2010.


See more: Chelsea Clinton's Wedding Day

Former President Bill Clinton walks daughter Chelsea Clinton down the aisle at her wedding on July 31, 2010, at Astor Courts in Rhinebeck, N.Y.

Photos: Chelsea Clinton's Wedding Day

From left, Marc Mezvinsky, Secretary of State Hillary Clinton, Chelsea Clinton and former President Bill Clinton are seen in a photo from Mezvinsky and Chelsea Clinton's wedding on July 31, 2010, in Rhinebeck, N.Y.

Chelsea Clinton and Marc Mezvinsky are seen during their wedding on Saturday, July 31, 2010, in Rhinebeck, N.Y.

Chelsea Clinton and Marc Mezvinsky are seen during their wedding on July 31, 2010, in Rhinebeck, N.Y.

Chelsea Clinton, right, sits with Marc Mezvinsky on the beach at Hilton Head Island, S.C., in December 1996. The two met while growing up in Washington (Mezvinsky's parents both served in Congress) and later attended Stanford University together. On Nov. 30, 2009, the two announced their engagement.

Chelsea Clinton is seen with her parents on June 20, 2009. Following high school, the first daughter went to Stanford University, where she initially declared a major in chemistry before switching to history. Her undergraduate thesis topic was the 1998 Belfast Agreement in Northern Ireland. She graduated in 2001.

Former President Bill Clinton, center, and daughter Chelsea Clinton, right, look on during a ceremonial swearing-in for Secretary of State Hillary Rodham Clinton, Feb. 2, 2009, at the State Department in Washington.

Chelsea Clinton waves as she departs after a campaign stop in San Juan, Puerto Rico, May 15, 2008. During her mother's presidential campaign, Chelsea campaigned for her extensively across the country, mostly on college campuses.

Chelsea Clinton strikes a pose during the Democratic National Convention in Denver, Aug. 26, 2008.

Chelsea Clinton waves to the crowd before the 134th Kentucky Derby, May 3, 2008, at Churchill Downs in Louisville, Ky.

Chelsea Clinton is seen at the Clinton Presidential Library dedication ceremony in Little Rock, Ark., Nov. 18, 2004.

Former first daughter Chelsea Clinton is seen in a July 12, 2004, photo.

Chelsea Clinton is seen on Oct. 30, 2000. After finishing her studies at Stanford, she went on to earn a Master's degree in international relations at Oxford.

First lady Hillary Rodham Clinton, daughter Chelsea Clinton and President Bill Clinton are seen after Chelsea's high school graduation on June 6, 1997.

President Bill Clinton dances with daughter Chelsea at a gala following his second inauguration in Washington on Jan. 20, 1997.

Chelsea Clinton is seen with her parents, then-first lady Hillary Rodham Clinton and President Bill Clinton, as the family leaves church services on Dec. 24, 1995.

Then-first daughter Chelsea Clinton is seen in a Sept. 5, 1994, photo. During her time in Washington, Clinton attended Sidwell Friends School and took ballet classes at the Washington School of Ballet.

Chelsea Clinton is seen on July 15, 1992. Born on Feb. 27, 1980, in Little Rock, Ark., Clinton moved into the White House on the day of her father's first inauguration on Jan. 20, 1993. She was 12 years old.

President Bill Clinton (L), First Lady Hillary Rodham Clinton (R), and daughter Chelsea (C) head toward a boat in Menesha Harbor for a cruise 24 August 1993 with members of the Kennedy family and other friends. The Clinton's are vacationing on Martha`s Vineyard.