The newborn Prince is four years younger than George – the oldest in the Cambridge brood – and two years younger than his sister Charlotte.
While we don’t yet know about how the new addition will affect the sibling dynamic, we do know a fair deal about George and Charlotte’s relationship thus far.
Luckily for us, the Duke and Duchess of Cambridge have given us snippets into the characters of their two eldest.
Speaking to a fellow mum last year at a war memorial unveiling last year, the Duchess made clear that it’s Charlotte whose the boss at home.
“She said that Charlotte is growing up really fast. She is the one in charge,” mother-of-two Samantha Barge told People.
She also mentioned that both George and Charlotte are bonding well: “We have both got two-year-olds and they are ruling the roost… They are both becoming really good friends, George and Charlotte.”
“George has been really easy,” he said. “[He] rules the roost, but Charlotte’s not far behind.”
Speaking to another patient that day, William said: “She’s going to be trouble when she gets older. All fathers say that to me… watch out for the little girls.”
It certainly seems like Charlotte’s the more confident of the two. When visiting their newborn brother in hospital yesterday, it was Charlotte who appeared to embrace the attention and won the crowds over instantly with her enthusiastic waving.
However, George appeared to be shy in front of the cameras and large crowd.
So far we can only speculate how the new arrival will change things for the siblings. Will the boys bond more? Will George and Charlotte become jealous of the attention their new brother is getting (as is normal with young children)? Or, as is the hope with every parent, will the three of them get on like a house on fire?
Chartered Psychologist Dr Sarah Kuppen – author of Little Kids Big Dilemmas – says that sibling relationships really depend on individual temperaments.
“For George and Charlotte, the introduction of a new member of the family will necessarily involve a period of adjustment,” she says. “Often new babies can cause a lot of excitement, which means attention can shift away from older siblings.
“For example, George and Charlotte could be included in the joy of their new brother by being shown how to watch for cues related to being fed, cuddled, changed and could be included in daily care activities.”
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