You never know when you might open your mailbox and find a special letter that was sent by a member of the royal family.
That's what happened for a few lucky people who received a letter of thanks from Prince William and Kate Middleton for all the warm wishes on their tenth wedding anniversary. One recipient was @cherylsmilesx on Twitter, who showed off the card she got from the Duke and Duchess of Cambridge, which included a portrait of the royal couple.
Cheryl shared the photo and said, “Thank you @KensingtonRoyal for the beautiful thank you photo of the Duke and Duchess of Cambridge #10thanniversary.”