Frankly, whether the Prince and Princess of Wales (or any other couple) wants to expand their family is none of our business, but we can assure you that we would be overjoyed to learn that William and Catherine are expecting their fourth baby. After all, the late Prince and Princess Philip had four children, and the Welsh couple are famous for having some pretty adorable children. Prince Harry and Meghan Markle have always said that two is enough, whereas I have never heard William and Catherine say that they are done adding to their family. And according to Us Weekly, adding to their brood is still firmly on the table.

"They are very grateful for what they have and feel very blessed to be able to raise three beautiful, healthy children," a source told the magazine. But if we had a fourth, it would be welcomed with open arms."

William and Catherine are parents to Prince George, 9, Princess Charlotte, 7, and Prince Louis, 4,

"Kate and William are going with the flow on that one, so this is not a priority or something they have ruled out," the source They continue.

"As far as their friends and family are concerned, it is very much a matter of watching this space."

Princess Catherine herself is one of three siblings, but another source tells the magazine, "Kate has been talking about wanting another baby for a while. She has always wanted four children, and William was originally happy with three, but she is trying to twist his arm somehow."

Princess Catherine has often joked at royal engagements that she wants more children, and the couple was frequently seen sweetly touching their children during a visit to Boston this week, as pictured above.