It’s not because the world will be looking on to see how she reacts to the fact she is no longer the ‘baby’ of the family. Instead it’s because the two-year-old – who turns three at the beginning of next month – will be making history the moment the Duke and Duchess expand their family to five.
For the first time in royal history, Princess Charlotte will be the first female to retain her claim to the throne, regardless of whether her new baby sibling is a boy or a girl.
Thanks to the Succession to the Crown Act of 2013, a female royal’s claim to the throne is no longer overtaken by the birth of a younger brother. Prior to the law’s passing, male siblings automatically preceded their older sisters when it came to the line of succession.