Jackie Kennedy's pink suit is locked in a vault and will be hidden from public view until 2103. Here are surprising facts about the famous outfit.

The design for the suit was pulled directly from Chanel's Fall/Winter 1961 collection.

However, as first ladies were typically expected to wear clothing made in the United States, a replica of the suit was made for Kennedy by Park Avenue fashion house Chez Ninon, according to The New York Times. The making of the suit was authorized through Chanel's "line for line" system, which allowed other designers to recreate the fashion house's garments using their materials.

The wool boucle suit featured gold buttons, navy-blue piping on the sleeves, and navy lapels. It was made in a vibrant shade of pink, which wasn't widely known at the time because most photographs and video footage from the day of the assassination were only available in black and white.

While the outfit is famously linked to the Dallas trip, Kennedy wore the suit, including the matching pillbox hat, on numerous other occasions.

According to The New York Times, Kennedy also wore the ensemble during a 1962 visit to London and that same year to meet with the prime minister of Algeria.

The outfit was reportedly one of her husband John F. Kennedy's favorites, and he specifically requested that he wear it on their trip, according to CR Fashion Book.

After the assassination of her husband, Kennedy's pink suit and accessories remained uncleaned and covered in splatters of blood.

According to biographer William Manchester's account of the assassination in his book "Death of a President," as reported by the LA Times, an aide and the president's personal physician both suggested that the first lady change into new clothes after she had boarded Air Force One to witness the swearing in of Lyndon B. Johnson.

However, Kennedy refused, saying, "Let them see what they've done."

"Somehow, that was one of the most poignant sights, that immaculate woman exquisitely dressed, and caked in blood," Lady Bird Johnson later wrote in her diaries, according to the LA Times.

Kennedy's pink suit, stockings, shoes, bag, and navy blouse were recovered after the assassination and placed in a dress box, which was first given to Kennedy's mother, Janet Auchincloss, before being transferred to the National Archives.  

The former first lady's pink pillbox hat and white gloves were lost. According to the LA Times, the hat's last known location was inside the hospital after the assassination, with strands of Kennedy's hair caught beneath the hat pin.

"While standing there I was handed Jackie's pillbox hat," Mary Gallagher, the first lady's personal secretary, wrote in her memoir. "I could almost visualize her yanking it from her head."

Though efforts have been made to locate the hat over the years, it remains missing.

According to the LA Times, Kennedy historians told the outlet they suspect it was sold to a private collector, or "stuck away in somebody's attic."

According to The New York Times, the dress box containing Kennedy's suit, stockings, and accessories arrived at the National Archives sometime before July 1964.

The box was accompanied by an unsigned note on the stationery of Kennedy's mother, Janet Auchincloss, that read, "Jackie's suite and bag — worn November 22, 1963."

The Kennedy family never advised the archives on whether or not they wished the garments to be cleaned, so they remained untouched, in the same condition as they were when Kennedy changed out of them at the White House in 1963.

The items are currently stored in a secret location inside the National Archives and Records Administration complex in College Park, Maryland, in a climate-controlled vault. According to the LA Times, the temperature of the vault is kept between 65 and 68 degrees, with a humidity level of 40%, and the air is changed six times an hour.

According to The New York Times, after Jackie Kennedy's death in 1994, the items were bequeathed to her daughter and sole surviving heir, Caroline Kennedy. However, they remained at the archives during this time.

In 2003, Caroline Kennedy officially transferred ownership to the National Archives with the provision that they would be hidden from public view for another 100 years. 

While Jackie Kennedy's pink suit won't be made visible to the public until 2103, far beyond many people's lifetimes, it will always be remembered in photographs as a symbol of one of the most tragic days in American history.