Like every family who celebrates Christmas, the royals have their traditions. But there's one, highlighted last year, that raised both questions and eyebrows.
In Spencer, a film based on Princess Diana starring Kirsten Stewart, the characters are seen being weighed before and after their Christmas dinner.
While critically acclaimed, it was one part of the highly stylised film that is said to be accurate amongst a host of fictionalisations.
The Royal Family has taken part in this tradition for decades - reportedly since the early 1900s. Supposedly, the point of the tradition is to see how much everyone enjoyed their food, and make sure that all the guests were given enough to eat. The idea being that if they had been well fed, they'd have put a couple of pounds on.
Started by Edward VII, guests under the late Queen Elizabeth would weigh themselves upon their arrival on antique scales, before doing the same at the end of their time at Sandringham.
Watch: How Many of These Royal Christmas Traditions Does Your Family Practise?
While it remains to be seen if this tradition will be kept up under the new King Charles, in 2018, Ingrid Seward, the editor of Majesty Magazine told Grazia that the tradition was still ongoing.
It may well not have been a Christmas custom that the late Diana would have taken part in happily, as she was open about her struggles with bulimia.
How are the Royal Family spending Christmas this year?
The Windsors are set to spend Christmas together at Sandringham, as was the long held tradition under Queen Elizabeth.
As it's the family's first festive season without their matriarch, it is bound to look a little different for the royals and the extended family are able to gather for the first time since the pandemic began.
Beforehand, Charles and Camilla will hold another lunch celebrating Christmas in Windsor, which the wider family are invited to. Camilla's two children, Tom, 47, and Laura, 44 are reported to have been invited to Sandringham this year, the first time the monarch has officially celebrated with a blended family.
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It will be the first time in decades that it is a King's Christmas Speech, instead of the Queen's, and reports have claimed that it will be "different" from how the Queen used to approach it the annual address.
It isn't likely that Meghan and Harry will be joining their relatives at Sandringham, after the recent release of their Netflix documentary series saw them level some serious accusation at the royal institution, including that aides working for Prince William briefed the press negatively against the Sussexes.
Harry's upcoming memoir, Spare, is poised to be released just a couple of weeks after Christmas, and Yahoo understands he is scheduled to appear on 60 Minutes with Anderson Cooper to promote the book.
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Whether Prince Andrew will attend King Charles' private Christmas festivities is unclear, it seems however very unlikely the Duke of York will be invited to attend the church service at Sandringham and take part in the traditional photo op.
After their visit to the church, the Royal Family are said to return back to Sandringham for their Christmas lunch — traditionally entering the dining room in order of seniority whilst Queen Elizabeth II was head of the family.
Then they take a walk together as a family, before enjoying afternoon tea and an evening meal. Even if King Charles decides to do away with the tradition of weighing his guests, it seems pretty likely they'll be well fed after all that.
