Kate Middleton

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge

The couple were in the Maldives earlier this month on a baby-free holiday, while George stayed in the UK with his grandparents Carole and Michael Middleton.

While William and Catherine were enjoying their week off, their eight-month-old son apparently decided to start crawling.

Although the royal couple missed this stage of George's development, they have plenty to look forward to.

"William and Kate are excited about the many milestones ahead," a source told Us magazine. "George already has a tiny tooth coming in. And his cheeks are chubbier than ever!"

The little prince also has his first public tour coming up, when he accompanies his parents on a three-week trip to Australia and New Zealand. New nanny Teresa Turrion Borrallo will also be with the family.

"She's the first foreign nanny to look after a future British monarch," another source told the magazine. "The Duke and Duchess are of course delighted she has chosen to join them," added a Palace rep.

William and Catherine are clearly enjoying every moment of parenthood. According to William, little George's personality is starting to show.

"He's a little bit of a rascal, I'll put it that way, so he either reminds me of my brother [ Prince Harry] or me when I was younger, I'm not sure," he joked to CNN last year. "He's doing very well at the moment. He likes his nappy changed."

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