Queen Elizabeth gave Prince William permission to break this wedding day rule

Rules are meant to be broken.

And although the royals usually follow strict protocol, it appears as though the queen is even up for breaking an odd rule or two. According to the book Kate: A Biography, author Marcia Moody revealed that the queen actually encouraged William and Kate to break one rule when it came to planning their wedding. Knowing that it was a special day for the pair, the royal told William to basically invite who he wants and forget the hierarchy who are expected to be invited.

"William was presented with a list of hundreds of people who he should invite and felt his heart sink. The occasion would 100 percent formal, with no room for their personal guest list or special touches. He spoke to the Queen and she told him to tear up the list, invite his friends and start from there," Marcia wrote.

And although that's probably not a smart move for the queen to make in terms of keeping up appearances, it truly is a loving grandmother move and shows that at the end of the day, her families happiness comes above all else. And this month, Queen Elizabeth's family is said to grow by one as her other grandson, Prince Harry, is expecting his first child alongside his wife, Meghan Markle. Meghan is now officially on maternity leave and expected to give birth later this month. The excitement.