A source tells PEOPLE that the Duke and Duchess of Sussex have not received an invitation to this year’s royal Christmas gathering at Sandringham. The couple, who are expected to spend the holidays in the U.S., haven’t taken part in Christmas with the royal family since 2018, the year they married.

The last time the Duke and Duchess of Sussex spent Christmas at Sandringham was in 2018, the year they tied the knot in the UK.

While the duke, 40, is in for a fun festive season at his Montecito mansion in California with his wife Meghan Markle, 43, and their two children Prince Archie, five, and Princess Lilibet, three, he is likely to feel some sadness at the fact he is not in the UK with the royals.