Though the exact message the Cambridge children wrote to their great-grandparents remains a bit of a mystery, it's certain that George, Charlotte, and Louis put a lot of effort into the design, which features cutout numbers and shapes.
In the first of them, the Queen and Duke of Edinburgh are located in Windsor Castle, the residence where the couple are going through the quarantine, and are dedicated to observing a card made by their great-grandchildren, Prince George and Louis and Princess Charlotte, children of Prince William, along with other cards and greeting letters.
Queen Elizabeth II and Prince Philip's new portrait.
Like leaders around the world, the Queen always chooses her brooches wisely, with thought far beyond whether or not it matches a particular outfit.
In the photograph, a smiling Prince Philip holds the card in his hand. Next to him on the couch at Windsor Castle sits the Queen, wearing a pastel dress.
The Queen, 94, was a 21-year-old princess when she married Lieutenant Philip Mountbatten on 20 November 1947. The marriage turned out to be the longest in the history of the British monarchy, and has lasted over seven decades. The royal couple has been married for 73 years and continues to show signs of having formed an unbreakable bond.
The royal toddlers have not been able to see their great-grandparents for several weeks but they made sure their love reached Windsor Castle, where the Queen and Philip are now in residence together.