A 7-year-old Jacqueline Bouvier stands scarcely taller than the family dog, King Phar, during the 35th-annual dog show at the Long Island Kennel Club. Morgan Collection / Getty Images Jackie and her mother, Janet Lee, in the East Hampton Horse Show in Long Island, New York, in 1935. Jackie won third prize in the family class that day and remained an accomplished equestrienne and horse-lover for the remainder of her life. AP Photo On her 10th birthday, young Jackie Bouvier sits with her puppy, Tammy, in 1939 at another dog show at the East Hampton Fair in Long Island. Morgan Collection / Getty Images A young Jackie (note the trademark white gloves) with her mother and 8-year-old sister in New York City in 1941, a year after the girls’ father, John Bouvier III, and Janet Lee divorced. AP Photo At age 18, Jackie poses for a picture with her father, a Wall Street stockbroker, in East Hampton. Morgan Collection / Getty Images Jackie sailing with her fiancé, then-Senator John F. Kennedy of Massachusetts. The couple met at a dinner party in May 1952 and was married only a year later in September 1953. Hy Peskin, Time Life Pictures / Getty Images The happy couple leaving a church in Newport, Rhode Island, after marrying September 12, 1953. The wedding was considered the social event of the season: An estimated 700 guests attended the ceremony and 900 attended the reception. AP Photo Jackie Kennedy accompanies her husband on the campaign trail in an open convertible in New York in 1960. Jackie took an active role in the campaign process despite being instructed to stay at home after becoming pregnant. George S. Zimbel / Getty Images Jackie and the newly minted President Kennedy at the inaugural ball January 20, 1961 in Washington, D.C. Kennedy Library Archives, Newsmakers / Getty Images Nineteen-month-old John F. Kennedy Jr. tugs at his mother’s faux-pearl necklace in the White House in August 1962. The nation became captivated with the young, attractive family, who ushered in the era of Camelot. John F. Kennedy Library / AP Photo The Kennedy family—John, Jackie, Caroline and John Jr.—pose for a photo on Easter Sunday following a private service April 14, 1963, outside the president’s father’s home in Palm Beach, Florida. AP Photo Mrs. Kennedy arriving at the Jaipur Airport during her tour of India. Jackie frequently accompanied her husband on foreign tours due to her interest in other cultures and her fluency in multiple languages. Kennedy once said of his wife on a visit to France: “I do not think it altogether inappropriate to introduce myself…I am the man who accompanied Jacqueline Kennedy to Paris, and I have enjoyed it.” Art Rickerby, Time Life Pictures / Getty Images In an undated photo, Jackie sits with characteristic poise in a red dress and red heels. She was the third-youngest first lady, and spread her style throughout 1600 Pennsylvania Avenue. “Everything in the White House must have a reason for being there,” she said. “It would be sacrilege merely to ‘redecorate’ it—a word I hate. It must be restored—and that has nothing to do with decoration. That is a question of scholarship.” AP Photo Jackie, who is holding a bouquet of roses, stands with husband just after their arrival at the airport for the fateful drive through Dallas on November 22, 1963. She was made a widow at the age of 34. Art Rickerby, Time Life Pictures / Getty Images The first family watches John F. Kennedy's funeral procession in Washington on November 25, 1963, three days after the president was assassinated in Dallas. Mrs. Kennedy, Caroline, John Jr., are accompanied by the late president's brothers Sen. Edward Kennedy, left, and Attorney General Robert Kennedy. AP Photo Aristotle Onassis and his new wife with her daughter, Caroline, walk back to his yacht after their wedding on Scorpios Island, Greece on October 20, 1968. The pair was hounded by paparazzi after their surprise engagement and marriage. Jim Pringle / AP Photo Jackie, in a festive summer print, and husband Aristotle Onassis leave an Athens nightclub at 7 a.m. after celebrating Jackie's 40th birthday. Nicholas Tsikourias / Getty Images Jackie looking graceful in a turtleneck in the winter of 1969. David Cairns, Express / Getty Images Jackie, in sensible flats, walks with younger sister, Lee Radziwill, at the Alvin Theater in New York in 1970. Ron Galella, WireImage / Getty Images A lifelong equestrian, Jackie rides in an annual Thanksgiving Day fox hunt with 80 others near Bedminster, New Jersey, in 1987. Steve Klaver / AP Photo In her white gloves, Jackie O speaks with son John Jr, who later would die in a plane accident while he was piloting. Jackie reportedly had a premonition he would die while flying and warned him to give up the hobby. Marcy Nighswander / AP Photo Jackie O, four years before her death, wearing oversize sunglasses and a skirt suit. Following the death of Onassis, she became a successful book editor at Doubleday. Time Life Pictures / Getty Images