The tradition began when George V and Queen Mary sent an individual portrait of themselves to the troops fighting in WWI and the practice stuck.
This means come December, we commoners get a glimpse into the royal family, featuring behind-the-scenes snippets from the year past.
Watch Kate Middleton and Prince William bake with Mary Berry. Post continues below.
The Duke and Duchess of Sussex have today released their 2019 Christmas card, featuring baby Archie centre-frame in their environmentally-friendly GIF style e-card.
The seven-month-old can be seen crawling towards the camera while his parents laugh in the background.
“Merry Christmas and a happy new year, from our family to yours,” reads the message.
Just sharing the sweetest Christmas Card from our President and Vice-President, The Duke and Duchess of Sussex. Very Merry Christmas, everyone! pic.twitter.com/McOcHALoGl
— The Queen’s Commonwealth Trust (@queenscomtrust) December 23, 2019