The down-to-earth act has been praised by Waitrose staff who told The Sun: "It is rare for anyone to ever offer to carry deliveries inside.
"George is always particularly helpful and is the one who asks each time what he can carry for them. He is a very inquisitive child.
"It shows how down-to-earth William is and that he wants his son to grow up being polite and helpful to others."
The little Prince reportedly asked his uncle Prince Harry, "Why are you so quiet?" when he was waiting to greet former US president Barack Obama.
But while George is the older brother, Charlotte is most definitely the boss.
Recent footage of the Cambridge children inspecting their mother's exhibit at the 2019 Chelsea Flower Show showed the tiny Princess playfully bossing the future King of England around!
In the footage, an excitable Princess Charlotte can be seen taking off her shoes to follow older brother George into a creek, before adorable exclaiming "Ooh la la!".
At one point, the sweet footage captured a bossy Charlotte being asked by father Prince William if she could help George, to which she quickly responds "No", and merrily skips on by.
In the short but sweet video, the young royal is also seen yelling, “George! Quicker, George!”