The one outfit the royal family always packs, no matter where they go

The very concept of a royal family is one of tradition and etiquette. So it should come as no surprise that monarchies themselves survive in the modern world, for the most part, in tradition alone.

And to help maintain that sense of tradition, the British royal family abides by a very specific set of rules. For example, they reportedly can’t wear colorful nail polish, and they aren’t supposed to take selfies with fans. But they don’t always follow the rules—learn 12 times the royal family broke their own protocol.

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Royal family at Christmas services 2018
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Royal family at Christmas services 2018
Britain's Catherine, Duchess of Cambridge (L) talks to Meghan, Duchess of Sussex as they arrive for the Royal Family's traditional Christmas Day service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2018. (Photo by Paul ELLIS / AFP) (Photo credit should read PAUL ELLIS/AFP/Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge attends Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
KING'S LYNN, ENGLAND - DECEMBER 25: Meghan, Duchess of Sussex and Prince Harry, Duke of Sussex attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge attends Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
Meghan, Duchess of Sussex and Britain's Prince Harry, Duke of Sussex, depart after the Royal Family's traditional Christmas Day service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2018. (Photo by Paul ELLIS / AFP) (Photo credit should read PAUL ELLIS/AFP/Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge attends Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge greet well wishers as she attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Stephen Pond/Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge attends Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: (L-R) Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge, Meghan, Duchess of Sussex and Prince Harry, Duke of Sussex leave after attending Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Stephen Pond/Getty Images)
(L-R) Britain's Prince Charles, Prince of Wales, Britain's Prince William, Duke of Cambridge, Britain's Catherine, Duchess of Cambridge, Meghan, Duchess of Sussex and Britain's Prince Harry, Duke of Sussex arrive for the Royal Family's traditional Christmas Day service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2018. (Photo by Paul ELLIS / AFP) (Photo credit should read PAUL ELLIS/AFP/Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
KING'S LYNN, ENGLAND - DECEMBER 25: (L-R) Prince Charles, Prince of Wales, Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge, Meghan, Duchess of Sussex and Prince Harry, Duke of Sussex arrive to attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Stephen Pond/Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: (L-R) Prince Charles, Prince of Wales, Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge, Meghan, Duchess of Sussex and Prince Harry, Duke of Sussex arrive to attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Stephen Pond/Getty Images)
(L-R) Britain's Prince Charles, Prince of Wales, Britain's Prince William, Duke of Cambridge, Britain's Catherine, Duchess of Cambridge, Meghan, Duchess of Sussex and Britain's Prince Harry, Duke of Sussex arrive for the Royal Family's traditional Christmas Day service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2018. (Photo by Paul ELLIS / AFP) (Photo credit should read PAUL ELLIS/AFP/Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Prince Charles, Prince of Wales, Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge, Meghan, Duchess of Sussex and Prince Harry, Duke of Sussex attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex arrive to attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Stephen Pond/Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
(L-R) Britain's Prince Charles, Prince of Wales, Britain's Prince William, Duke of Cambridge, Britain's Catherine, Duchess of Cambridge, Meghan, Duchess of Sussex and Britain's Prince Harry, Duke of Sussex arrive for the Royal Family's traditional Christmas Day service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2018. (Photo by Paul ELLIS / AFP) (Photo credit should read PAUL ELLIS/AFP/Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Catherine, Duchess of Cambridge and Meghan, Duchess of Sussex arrive to attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Stephen Pond/Getty Images)
KING'S LYNN, ENGLAND - DECEMBER 25: Meghan, Duchess of Sussex and Prince Harry, Duke of Sussex attend Christmas Day Church service at Church of St Mary Magdalene on the Sandringham estate on December 25, 2018 in King's Lynn, England. (Photo by Samir Hussein/Samir Hussein/WireImage)
Britain's Prince Edward, Earl of Wessex (L), Meghan, Duchess of Sussex and Britain's Prince Harry, Duke of Sussex depart after the Royal Family's traditional Christmas Day service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2018. (Photo by Paul ELLIS / AFP) (Photo credit should read PAUL ELLIS/AFP/Getty Images)
Meghan, Duchess of Sussex departs after the Royal Family's traditional Christmas Day service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2018. (Photo by Paul ELLIS / AFP) (Photo credit should read PAUL ELLIS/AFP/Getty Images)
Meghan, Duchess of Sussex and Britain's Prince Harry, Duke of Sussex, depart after the Royal Family's traditional Christmas Day service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2018. (Photo by Paul ELLIS / AFP) (Photo credit should read PAUL ELLIS/AFP/Getty Images)
Meghan, Duchess of Sussex and Britain's Prince Harry, Duke of Sussex, greet wellwishers after the Royal Family's traditional Christmas Day service at St Mary Magdalene Church in Sandringham, Norfolk, eastern England, on December 25, 2018. (Photo by Paul ELLIS / AFP) (Photo credit should read PAUL ELLIS/AFP/Getty Images)
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Their rules even extend to when they're on vacation; royal family members are required to pack a very specific outfit no matter where they go, according to The Sun.

When on holiday, the royals always have to be ready with a black outfit. The reasoning makes rather moribund sense: They must always be prepared with mourning attire, just in case there is a death in the family. Here are 18 more etiquette rules the royal family must follow.

It seems as though the tradition began with Queen Elizabeth II, back in 1952. While on royal tour with Prince Philip in Kenya, her father, King George VI, passed. A suitable black dress was not packed for the Queen, but she couldn’t be seen stepping out of the plane back in the United Kingdom without the proper mourning clothes. Instead, she had to wait for a black outfit to be brought onboard so she could change before exiting the plane.

Waiting around on an airplane for an outfit change wasn’t ideal, so the devastating event sparked a new rule. From then on, the entire royal family has been required to pack a black outfit in case of another worst-case scenario in the future. Next, check out the other dress code rules the royal family must follow[Source: The Sun]

More on the royal family below:

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Royal family nicknames
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Royal family nicknames
Prince George, Princess Charlotte and other great grandchildren call the queen "Gan-Gan."
Prince Charles, Prince Harry and Prince William, along with other children and grandchildren call her "Mama." 
According to Metro, Prince William went by "Steve" at university. Prince Harry reportedly also went undercover as "Spike Wells" on Facebook. 
Prince Philip calls his wife "Lilibet," or "cabbage." 
Prince Philip reportedly calls Meghan "Tungsten" after the tough metal, because she's "tough and unbending."
Prince William also reportedly calls the queen "Gary." When the Duke of Cambridge was younger, he had trouble pronouncing  "Granny."
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