Charles Spencer, Prince William, Prince Harry and Prince Charles at Princess Diana's funeral service.

The Prince of Wales was NOT in the mood for a long ceremony....

Prince Charles: Cute Throwback Picture From Queen Elizabeth's Coronation

William and Kate are teaming up with Mary Berry from The Great British Bake Off for the ultimate Christmas special you don't want to miss. It will air on BBC One and will feature the three of them coming together "as they serve a festive feast to thank those who are spending their Christmas helping others," according to ET Canada.

A Berry Royal Christmas: What To Expect

Kensington Palace shared to social media some behind the scenes images as well as gave fans some insight into what we can expect during the special. We surely can expect the Duchess to be icing some cakes with Berry while they chat about Kate's commitment to youth, we can expect them to visit Action on Addiction, and The Passage Charity to learn more about homelessness prevention, among many other exciting things. 

Find out how Meghan and Harry are putting a spin on the "Twelve Days of Christmas" HERE! 

The special will then wrap up with William, Kate and Mary hosting a Christmas party for the staff and volunteers of all the charities! A Berry Royal Christmas will premiere on Monday December 16 at 8:30 p.m. on BBC One and BBC iPlayer