In fact, Kate and Will have a trick they've used for the past two years to ensure their children are kept occupied if they grow bored while waiting for the flypast and waving at the crowds.
The duke and duchess, who married three weeks ago, made the short trip from Buckingham Palace to Horse Guards Parade in a horse-drawn carriage as royal fans lining the Mall cheered and waved. The prince looked on at the parade with delight as he chatted with second cousin Savannah Phillips, granddaughter of Princess Anne, who wore a pink and white floral dress.
The monarch is technically the head of Britain's armed forces and would traditionally lead an army into war.
The young royals have a knack for stealing the show at the Trooping The Colour ceremony at Buckingham Palace - and this year was no exception.
A Sikh Coldstream Guards soldier became the first to wear a turban during the Royal Horseguards ceremony Saturday - a move he said he hopes will be a "new change in history".
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"I'm quite proud and I know that a lot of other people are proud of me as well", he was quoted as saying by the BBC.
Royal blog Royal Central reports that this is the largest royal family gathering so far this year.
Some sarcastic conducting and shutting Prince George up! The pair were last seen out together at Prince Harry and Meghan Markle's royal wedding in May, although they were sitting apart during the ceremony. A 41-gun salute will also be fired in nearby Green Park to mark the occasion.
Early this morning, The Queen celebrated her official birthday with the citizens of England.
The Queen, whose actual birthday is on April 21, inspected the troops and received a royal salute, and watched displays of precision marching before she was due to make her way back to Buckingham Palace.