Unlike Suits actress and Prince Harry's fiance Meghan Markle, Kate wasn't invited to join in on the Christmas festivities back when she was engaged to Prince William.
So while Kate did not have to worry about giving the Queen a gift that year, she did eventually get married into the royal family, and wanted to do something special for the monarch one Christmas.
Last Christmas, the Duchess of Cambridge decided to do something extra special for her grandmother-in-law. Kate knew she had to think of out the box if she wanted to impress a "woman who has everything."
"I thought back to what I would give my own grandparents," Kate explained to Harper's Bazaar UK. "I thought 'I'll make her something, which could have gone horribly wrong.'"
She went through with her plan anyway, and it turned out to be quite a success.
So what did the Duchess gift the the Queen?