She was able to keep him in line at Trooping the Colour in 2018, and months later have him in hysterics at Princess Eugenie’s wedding.
The expert continued: “Savannah’s body language might make her look like the naughty one in the family but she is also adept at keeping a more grown-up eye on the littler royals, checking them when they get too boisterous but also playing with them to stop them from getting bored.
“She playfully shushed George on her first appearance on the royal balcony and she had him entranced with her pretend trumpet-playing at a royal wedding.
“At the Jubilee she sat behind George, Louis and Charlotte, ensuring they all joined in the fun with all Princess Anne’s grandchildren in the seats behind.”