The 10-month-old has taken his first steps and is toddling about without the help of his parents, his mother - the Duchess of Cambridge - has revealed.
As well as the sailing event, People reports Kate attended a party celebrating Prince Philip's birthday later that day and prior to that she and Prince William spent time in the Perthshire area of Scotland.
Meanwhile, the 32-year-old has also been redecorating her young family's country home - Anmer Hall, on Sandringham Estate - and is said to be very close to finishing the project.
Rumour has it this foray into interior design has led to Kate becoming completely obsessed with creating the perfect cosy getaway and, er, finding the perfect fireplace. But of course.
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