The royal family does not have an official Halloween celebration but they will dress up occasionally. Over the years notable royals have happily donned the occasional costume including Princess Beatrice who dressed as a cat, back in 2016 and Prince Harry once proudly wore a goblin outfit for a school play. (Plus, of course, we all remember his infamous Nazi costume back in 2005).
Even Queen Elizabeth herself has been photographed sporting fancy dress.
It is reported that Prince William and Kate hold private parties at Kensington Palace for their own children although this has not been officially confirmed. Over the last few years, there have been few clues as to how Prince Harry and Meghan Markle could choose to spend Archie's first Halloween.
It is unlikely that we will see many selfies posted on Meghan and Harry's Instagram page as they rarely post anything personal there. The account is primarily for promoting their various charities. However, Markle did celebrate the holiday before she married into the royal family and back in 2016 she was spotted with a large pumpkin on her head.
At this time Harry was visiting her in Toronto, and it was said that they did attend a Halloween party as a couple.
Since their marriage, the Duke and Duchess have only been seen celebrating in an official capacity, for example when they met performers in New Zealand just before Halloween last year. The couple seemed impressed by the spooky array of outfits and took plenty of photographs while they were there.
The royal children will probably not be going door-to-door considering the amount of interest they get from the media everywhere they go. However, the home and grounds of Kensington Palace are extensive so it is likely that they can make their own fun. Normally, any royal activities that include the children are private.
Although the royal family doesn't celebrate publicly it will likely be a busy time for the Middleton family who run their own business Party Pieces.
Perhaps there will be a private party for George, Charlotte, Louis, and Archie. The Duchesses have arranged play-dates for their children before and when could be a more perfect time to organize some spooky fun than Halloween!?