Princess Diana jokingly referred to her clutches as her 'cleavage bags'

Another day, another secret use for a famous royal's purse.

We know that Queen Elizabeth II uses her handbag to send signals to her staff and that Duchess Kate holds her clutch in both hands when she's attempting to avoid an awkward handshake -- and now, the hidden function behind Princess Diana's clutches has been uncovered.

SEE ALSO: Pippa Middleton supposedly didn't let Prince Harry and Meghan Markle sit next to each other at her reception

If you look at old photos of the Princess of Wales exiting cars at events, you'll notice that she's almost always carrying a clutch -- and the accessory didn't just exist to hold her belongings.

"We used to laugh when we designed what she called her 'cleavage bags,' little satin clutches which she would cover her cleavage with when she stepped out of cars," the royal's handbag designer Anya Hindmarch told the Telegraph.

See Princess Di with her "cleavage bags":

11 PHOTOS
Princess Diana's 'Cleavage Bags'
See Gallery
Princess Diana's 'Cleavage Bags'
PARIS, FRANCE: Britain's Princess Diana steps out of her car 25 September as she arrived at the Petit-Palais in Paris for a dinner in her honor. Diana is on a two-day official visit to France. AFP PHOTO (Photo credit should read ERIC FEFERBERG/AFP/Getty Images)
LONDON - JUNE 1997: Princess Diana arrives by car to watch a performance of the ballet 'Swan Lake' in June 1997 in London, England. (Photo by Anwar Hussein/WireImage)
Diana, The Princess Of Wales Attends The 'In Love And War' Premiere In London. (Photo by Justin Goff\UK Press via Getty Images)
LONDON, UNITED KINGDOM - OCTOBER 26: Princess Diana Alighting Her Car At The Premiere Of The Film 'haunted' At The Empire Cinema In London. The Princess Is Wearing A Blue Evening Dress Designed By Catherine Walker. (Photo by Tim Graham/Getty Images)
LONDON, UNITED KINGDOM - JULY 01: Diana, Princess Of Wales At The Tate Gallery On Her 36th Birthday For A Gala To Celebrate The Tate's 100th Birthday. (Photo by Tim Graham/Getty Images)
Diana, The Princess Of Wales Attends The 'Haunted' Premiere In London. (Photo by Antony Jones/UK Press via Getty Images)
Princess Diana (1961 - 1997) arrives, wearing a navy shift dress, at a film premiere, London, 23rd September 1993. (Photo by Jayne Fincher/Princess Diana Archive/Getty Images)
CHICAGO, UNITED STATES: Princess Diana steps out of her limousine upon arrival at the Northwestern University Law School 05 June to attend a breast cancer symposium held at the school in Chicago. The Princess is on a three-day visit to Chicago. (ELECTRONIC IMAGE) AFP PHOTO/Vincent LAFORET (Photo credit should read VINCENT LAFORET/AFP/Getty Images)
ARGENTINA - NOVEMBER 24: Diana, Princess Of Wales, Holding The Hem Of Her Dress Down As Is Getting Out Of Her Car. She Is Attending A Dinner In Argentina. (Photo by Tim Graham/Getty Images)
LONDON, UNITED KINGDOM - DECEMBER 05: Princess Diana Arriving By Official Car (Photo by Tim Graham/Getty Images)
HIDE CAPTION
SHOW CAPTION
of
SEE ALL
BACK TO SLIDE

Well, the photos don't lie -- the trick seemingly worked like a charm. Smart, smart lady.

Read Full Story
JOIN THE CONVERSATION
Like AOL Lifestyle on Facebook