Prince George, Princess Charlotte and Prince Louis quickly had to learn how royals are expected to act in public. The siblings can often be found bringing joy to many as they smile and wave to onlookers and photographers on almost any occasion.
The next generation of royals are expected to take etiquette training and to bow or curtesy to the Queen from a very young age.
And despite undergoing training, Prince William has also taught them sweet gestures himself - which include a lesson he learnt from their grandmother Diana.
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