Traditionally, it would have been frowned upon if a member of the Royal Family showed their child affection in public.
However, modern norms allow members like Kate and William as well as Sophie, Countess of Wessex and Prince Edward to be more relaxed around their royal children in public.
The expert added that it is “healthy” to be “affectionate” as a family.
Kate and William will often show affection towards George, Charlotte and Louis in the form of a hand-hold as well as picking them up and cuddling them.
The couple can also be seen encouraging their children’s independence on a number of occasions.
Previously speaking on That Peter Crouch Podcast, Prince William was asked whether his son has an interest in football.
Prince William replied: “I took George and Charlotte a while back, we went to the Norwich-Villa game.
“We tried to slip in there quietly but the [cameras] picked us up. George started getting really into it by the end.
“I’m trying not to persuade [George] to be a Villa fan, I’m letting him choose his own way, having a variety of clubs of interest that I want him to go and experience. It’s about finding what fits for him.”
Kate is also very interested in childhood learning and development, which shows she is keen to be there for her children in their childhood.