A young Jacqueline Bouvier rides a pony led by her father, stockbroker John Vernou Bouvier III, Aug. 12, 1934.
Student Jacqueline Bouvier Kennedy in a lecture at Georgetown University, circa 1950-1951.
First official White House photograph of first lady Jacqueline Kennedy in Washington, 1961.
Sen. John F. Kennedy, D-Mass., helps his wife, Jacqueline Bouvier Kennedy, adjust a camera in front of their home in Hyannis Port, Mass., in 1953. The Kennedy compound would serve as the backdrop for family gatherings for decades to come.
Hulton Archive/Getty Images
The bride poses for a formal wedding portrait. She married John F. Kennedy on Sept. 12, 1953.
A scene from the Kennedy-Bouvier wedding. The groom walks alongside his bride at an outdoor reception, in Newport, R.I., Sept. 12, 1953.
Jacqueline Kennedy holds her son, John Jr., in her arms. John-John was born on Nov. 25, 1960.
US Senator John Fitzgerald Kennedy his wife Jacqueline pose with their son John, Dec. 10, 1960.
President John F. Kennedy and his wife Jacqueline Kennedy Onassis leave an event April 14, 1961.
National Archives/Getty Images
Jacqueline Kennedy stands with her husband, who will soon be inaugurated as the 35th president of the United States, Jan. 20, 1961. From left: the president-elect's parents, Rose and Joseph Kennedy; Jacqueline Kennedy, Lyndon B. Johnson and his wife, Lady Bird Johnson.
President Kennedy and first lady Jacqueline Kennedy pose for a family portrait with their children, John and Caroline, at Hammersmith Farm, Newport, R.I., Sept. 29, 1961.
Ravishing in red, the first lady poses in the White House dining room during the filming of the CBS News Special "A Tour of the White House With Mrs. John F. Kennedy," Jan. 15, 1962.
Ever the supportive spouse, the first lady stands by her husband's side during a White House press conference, April 9, 1963.
Ever stylish, the first lady poses outdoors, circa 1960.
President Kennedy with first lady Jacqueline Kennedy, as their daughter, Caroline, sits atop a pony and their son, John Jr., holds on to the pony and his mother, March 31, 1963.
John F. Kennedy Library/Getty Images
Sailing has long been a Kennedy family passion. President Kennedy, second right, and first lady Jacqueline Kennedy attend the first America's Cup race, Sept. 9, 1962, in Newport, R.I.
Kennedy Library Archives/Getty Images
The first lady in Paris, June 1961.
Texas welcomes the first lady with a beautiful bouquet of roses, Nov. 22, 1963.
The first lady sits alongside her husband and waves. Texas Gov. John Connally takes his set in the front as the motorcade makes its way from the airport, Nov. 22, 1963.
Vice President Lyndon Johnson takes the Oath of Office on Air Force One, becoming the 36th president of the United States as the first lady looks on in shock, Nov. 22, 1963.
Jacqueline Kennedy stands with her two children Caroline Kennedy and John F. Kennedy, Jr and brothers-in law Ted Kennedy, left back, and Robert Kennedy, right, at the funeral of her husband President John F. Kennedy, Nov. 26, 1963 in Washington.
Robert Kennedy and Edward Kennedy with their sister in law Jacqueline Kennedy during the funeral of President John F Kennedy, Nov. 25, 1963 in Washington DC.
Gamma-Keystone via Getty Images
The wife of US late President Kennedy, Jacqueline Kennedy and her daughter Caroline arrive at their new home after living White House in Washington D.C.
American First Lady Jacqueline Bouvier Kennedy sits at a classroom table as her daughter, Caroline Kennedy, runs her hand through her mother's hair, during a visit to Caroline's school, May 24, 1962.
John F. Kennedy Library/Getty Images
Photo taken in 1966 of Jackie Kennedy and her children horse-riding during a visit in Roma.
Jacqueline Kennedy horseback riding with Caroline, in 1966.
Jacqueline Kennedy, in her signature sunglasses, shops in Capri, Aug. 24, 1970.
Ron Galella/Getty Images
The former first lady, center, sits flanked by her two children, John Jr. and Caroline, circa 1968. Seated behind them are Eunice Kennedy Shriver, second from left, and Sargent Shriver.
Millionaire shipping magnate Aristotle Onassis with his wife, Jackie, Oct. 18, 1968.
Jackie Kennedy Onassis and Aristotle Onassis at La Cote Basque, Sept. 28, 1970, in New York.
From left: Jackie Kennedy Onassis, Caroline Kennedy, Rose Kennedy and Ted Kennedy pose for a photo at Caroline Kennedy's graduation from Concord Academy, June 5, 1975.
During a visit to Boston, Jacqueline Kennedy Onassis at the dedication of the John F. Kennedy Presidential Library and Museum in Dorchester, Mass., Oct. 29, 1993.
John Tlumacki/The Boston Globe via Getty Images
Jacqueline Kennedy Onassis and businessman Maurice Tempelsman walk through Central Park, April 4, 1994, in New York.