Prince William and Kate Middleton's Christmas will be quite busy.

According to Hello!, this year is the Duke and Duchess of Cambridge's last Christmas as a family of four because Middleton is expecting her third royal baby in April.

Middleton's pregnancy is not slowing her down though. In fact, she and Prince William are hosting Prince Harry and his fiancée, Meghan Markle, in their country home Anmer Hall in Sandringham.

The palace has also confirmed this. "You can expect to see The Duke and Duchess of Cambridge, Prince Harry and Ms Markle at Sandringham on Christmas Day," a Kensington Palace spokesperson told Us Weekly.

Hello! noted that this is the perfect time for the Duke and Duchess of Cambridge to teach the "Suits" star the ins and outs of being a full-time royal. This will also give Markle plenty of time to bond with four-year-old Prince George and two-year-old Princess Charlotte.

Traditionally, when Prince William and Middleton spend Christmas in Norfolk with the royals they celebrate the Christmas Eve at the Queen's house. Meanwhile, Prince George and Princess Charlotte will join the monarch and her other great-grandchildren in putting up the Christmas tree's finishing touches.

The royal family will then gather together in the Red Drawing Room during tea time and open their presents on a trestle table. In the evening around 8 p.m., a candle-lit dinner is served with the ladies in gowns and jewels and the men in black ties.

On the morning of Christmas Day, the royal family will share a full English breakfast. They will then attend the traditional church service at St. Mary Magdalene Church.

After the holidays, Prince William and Middleton will head to Norway and Sweden for an official visit. The couple's royal tour will begin at the end of January and culminate at the first week of February.

"The Duke and Duchess of Cambridge will visit Sweden and Norway from Tuesday 30th January to Friday 2nd February," the palace wrote on  Twitter, adding the hashtags, "#RoyalVisitSweden" and "#RoyalVisitNorway."

In related news, Prince William and Middleton made headlines recently for their rare PDA. The Duke and Duchess of Cambridge do not hold hands in public. So, many noticed when Middleton touched her husband's knees during their interview for "Blue Peter" last week.

What can you say about Prince William and Middleton's Christmas schedule? Drop a comment below.