Princess Beatrice has changed her Christmas plans due to medical reasons.

A source confirmed to PEOPLE that Beatrice, 36, and her husband Edoardo Mapelli Mozzi, 41, will now be joining the royal family for the Christmas gathering at Sandringham — due to her pregnancy — instead of traveling to be with her in-laws in Italy for the holidays as originally scheduled.

Beatrice likely won’t participate in the walk to church, the source added.

Sandringham is the royal family’s traditional Christmas destination, with King Charles hosting the festivities. Beatrice’s daughter Sienna Elizabeth, 3, and stepson Christopher “Wolfie” Woolf, 8, will also reportedly attend the festivities, according to Hello! magazine.

Princess Beatrice and Edoardo Mapelli Mozzi on July 9, 2024 in London.

Karwai Tang/WireImage

News broke in October that Beatrice — who is granddaughter of the late Queen Elizabeth II — was expecting another baby.

A statement from Buckingham Palace at the time read, “Her Royal Highness Princess Beatrice and Mr Edoardo Mapelli Mozzi are very pleased to announce that they are expecting their second child together in early spring; a sibling for Wolfie, aged eight, and Sienna, aged three.”

Beatrice’s uncle, King Charles, also shared his joy over the announcement. “His Majesty The King has been informed and both families are delighted with the news,” the statement continued.

It is PEOPLE’s understanding that Beatrice’s younger sister, Princess Eugenie, 34, will not be in attendance at Sandringham this year, as she previously accepted an invitation to spend the holidays with in-laws.

And while most of the royal family will be in attendance at Sandringham for the holiday, Princess Beatrice’s parents, Prince Andrew and Sarah Ferguson, will be notably absent. The pair — who while no longer married, share a residence at the Royal Lodge on the Windsor estate — reportedly withdrew the initial acceptance of their invitation amid the public uproar over The Duke of York’s alleged dealings with a known Chinese spy. 

From left: Princess Beatrice, Prince Andrew and Princess Eugenie on Christmas in 2015.

Chris Jackson/Getty 

Prince Andrew, 64, and Ferguson, 65, will likely spend the day at home out of the public eye.

PEOPLE understands that Prince Andrew reached the decision to skip the royal family’s Christmas gathering after discussing the matter with Ferguson, who convinced him that this was the right move amid the scandal.