King Charles and Kate Middleton have a powerful bond. As members of the royal family, they often remain stoic in public, but insiders claim they have a deep regard for each other. Not only do they share a special love for Prince William, but we have to believe that Charles and Kate also bonded during their cancer journeys. As a father-in-law, Charles treats Kate like the daughter he never had. As her 44th birthday approaches, an insider thinks it could be a big celebration for Kate Middleton, and King Charles has a lovely gift planned. View this post on Instagram A post shared by The Prince and Princess of Wales (@princeandprincessofwales) King Charles May Gift Kate Middleton with a Precious Family Heirloom People reported former royal butler Grant Harrold told Heart Bingo what he thinks King Charles has in store for Kate Middleton’s birthday. He said it will be an “intimate” affair, likely with the King and Queen, Prince William, and their children, Prince George, Princess Charlotte, and Prince Louis, celebrating Kate. “All royal birthdays are celebrated in some shape and form, even if the birthdays aren’t big celebrations,” Grant shared. “When I worked for the King, he would certainly have a private dinner. It wouldn’t be a big family gathering, it’d just be a private dinner.” Because King Charles adores Kate Middleton, Grant is sure he’ll celebrate her. “I can almost guarantee that the King will still host a birthday party for his daughter-in-law,” he said. “There’ll be a celebration, and food-wise, she will be eating some of the things that she likes.” Grant added that King Charles and Queen Camilla will give Kate Middleton a “joint gift.” It could be something significant and very personal because he holds Kate in such high regard. “When he was Prince of Wales, he would give things that had the insignia on them, depending on who it was. It’s possible that he could do something like that. Or it might be something he’s advised from the Royal Collection, maybe something that’s a family heirloom that he’s allowed to pass on,” Grant shared. We know no matter how Kate celebrates her birthday, she’ll be the image of grace and gratitude. This story’s featured image is by  Samir Hussein/WireImage