Rich people know how to protect their wealth. That’s why it was expected for both Prince William and Prince Harry to sign a prenuptial agreement when they tied the knot with their respective wives, Catherine, Duchess of Cambridge, and Meghan, Duchess of Sussex.

But apparently, they did not. While singing a prenuptial agreement might be one of the most common ways to protect one’s assets among celebrities in case the marriage goes awry, it is not the norm among members of the British royal family.

One of the reasons given is that signing prenups is not popular with the British. “Historically, members of the royal family have not had them,” author Ingrid Seward told People. “They are more popular in the United States — it’s just not a British thing.”

Apparently, it was Prince William himself who chose not to sign a prenup despite being advised that it might be better for him to sign one. “‘For him to refuse, it would have had to have been suggested to him by someone and it was not,” an unidentified source revealed. ” There is no prenuptial agreement in place for this wedding.”

The same is true for his younger brother, Prince Harry. When he married former “Suits” star Meghan Markle, the couple did not sign any prenuptial agreement as well.

But Prince William and Prince Harry refusing to sign a prenup is rather baffling. They should know that even fairytale weddings can end up in tragedy, as what happened to their parents, Prince Charles and Princess Diana. William and Harry’s parents likewise declined to sign a prenup. And when things went sour, Princess Di received a $22.5-million lump sum.

Of course other examples of prenup-free-royal-marriages-gone-awry abound. For instance, Sarah Ferguson and Prince Andrew also did not sign a prenup, and their marriage’s breakup resulted in the Duchess of York reportedly receiving $4.8 million.

But there’s actually a good reason for Prince Harry and Prince William not signing any prenup. With Queen Elizabeth II at the helm, neither Kate Middleton nor Meghan Markle would end up grabbing with anything substantial even if divorce might happen.

The reason is that most of the wealth and properties enjoyed by the royal family members belong to the Queen anyway. “You wouldn’t need a prenuptial agreement to stop Windsor Castle from being cut in half in the event they divorce, because it’s not Harry’s,” explained Duncan Larcombe, author of “Prince Harry: The Inside Story.”

Prince Harry and Prince William Prince Harry, Duke of Sussex, and Prince William, Duke of Cambridge, during the annual Remembrance Sunday memorial. Getty Images/Chris Jackson