With the coronation just days away preparations are at fever pitch to make sure the big day goes off smoothly.
Months of planning have gone into every stage of the event, which will involve processions, concerts, and a flypast as well as the ceremony itself.
But one aspect of the pageantry is likely to leave Kate, Princess of Wales, feeling unwell.
In 2019, royal fans were left wondering why Kate Middleton looked out of sorts while riding in a horse-drawn carriage at Trooping the Colour - and apparently it was down to the less than smooth ride.
Kate sat in a carriage alongside the Duchess of Cornwall, Prince Harry and Meghan Markle as they travelled from Buckingham Palace to Horse Guards Parade.
And royal fans wondered why she looked at times a little off colour and not her usually smiley self.
However, the Mirror revealed that it was in fact the carriage ride that left Kate feeling somewhat sick due to the swaying motion.
The Queen also suffered with seasick – despite sailing in the Royal Yacht Britannia for 43 years – and recommended her favourite pills to Kate.
A royal source said at the time: "The truth is the Duchess of Cambridge gets very seasick and doesn’t enjoy the rocking motion of carriages.
“Worrying she may be ill on such an important occasion as Trooping the Colour added to her stress."
According to Coronation rehearsal documents seen by The Times, Kate will be among the working royals taking part in the carriage procession and balcony appearance with her husband.
Dr Tessa Dunlop previously told the Mirror: "History suggests working royals will stand out.
"In 1953 the Queen’s sister Princess Margaret had her own coronation gown designed by Norman Hartnell, embroidered with roses and daisies and offset with a stunning Cartier tiara.
"She travelled to the Abbey with the Queen Mother and they sat in a box overlooking proceedings with a four-year-old Prince Charles squashed between them.
"A similar scenario for the Princess of Wales and her three children is likely – William and his offspring are next in line to the throne and coronations deliberately emphasise the order of precedence and succession.
"Like it or not this state occasion is all about royal hierarchy. Visual messaging through both costume and carriage will remind us who the future King and Queen are (whether the Sussexes like it or not!)"
William, Kate and their children George, Charlotte and Louis are reportedly planning to be in a carriage behind the King and Queen, who will be in the gold state coach on the journey from the Abbey.
