Princess Kate under 'no pressure' from Royal Family as key date looms

In March, Kate announced she had begun a course of preventative chemotherapy.

Just last month, the mother-of-three confirmed the treatment had ended, and was looking forward to returning to some royal engagements in the near future.

One such engagement would be joining the rest of the Royal Family on the Sandringham Estate for Christmas.

A source told The Express: "Kate is on the guest list for this year's Christmas gathering.

"She's keen to join her children and family to celebrate the holidays, but there's no pressure for her to attend.

"Obviously everyone is looking forward to having her there, but if she doesn't feel up to it on the day, the family will understand."

Kate has begun her gradual return to royal duties, starting with meeting a young girl battling cancer at Windsor Castle on October 2.

On Thursday last week, the Princess of Wales performed her first official outing since ending chemotherapy.

She joined Prince William in Southport to meet bereaved family members of the stabbing victims.

For the outing, Kate donned an Alexander McQueen coat and a ring that many view to be an "eternity symbol" from the Prince of Wales.

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The royal insider detailed what this year's Royal Family Christmas will look like at Sandringham House.

They claimed: "There will be a large number of people present at this year's dinner.

"It was trialled in the ballroom for the first time last year and proved a big success so this year will be held in a similar fashion.

"There will be a buffet-style roast served where members of the family can help themselves. It will include a traditional roast dinner spread with all the trimmings."