The First Lady was joined by her granddaughter Finnegan Biden who opted for a pale yellow cape dress with a matching floral headband.

This could plausibly mean that the Duchess of Edinburgh, her daughter Lady Louise Windsor, Princesses Beatrice and Eugenie, Princess Anne and Zara Tindall would all be wearing tiaras, a spectacle which, while in line with coronations past, would be quite the visual blitz of sparkle at a time when the royals are keen to appear relatable and modern. Leader of the House of Commons Penny Mordaunt became the first woman to carry and present the Jewelled Sword of Offering at the Coronation. After rumours circling for months about the quandary faced by the Princess of Wales over whether she should don a tiara or not, reports suggest that her current plan is to wear a floral headpiece instead of precious jewels. On the eve of Royal Ascot, Jess Collett is up to her David Bowie-esque, lightning flash earring studs in feathers, fake grass, silk flowers and Ecuadorian straw. We’re stoically progressing with our interview in 30 degree heat in her North Kensington studio-cum-shop, while members of her five-strong team bob in and out – although we keep finding ourselves trying on merch.

Besides, if the Princess of Wales did decide to wear a tiara, it would be a choice with delicate political consequences. In a battle between sentiment and spectacle, it would be a huge honour for anyone to wear the Girls of Great Britain and Ireland tiara, which was Elizabeth II’s favourite, or Queen Mary’s fringe tiara, which Queen Elizabeth wore for her 1947 wedding, but neither of those pieces would be as visually arresting as, say, the, Burmese Ruby tiara with its 96 rubies or the Brazilian aquamarine tiara with its imposing oblong stones.

First Lady Jill Biden arrived to the ceremony in an elegant blue ensemble. Mrs Biden, who was sent as the States' representative, wore a Ralph Lauren skirt suit and accessorised with matching gloves and hair piece. Charlotte went mainly sans accessories aside from a tiny bracelet in what appears to be white gold. Lana__D__ tweeted: "I adore her. So much sass and poise. Very similar personality like the Princess Royal." @AnastasiaRoya20 added: "She looks like an angel." And although there is no suggestion of a tussle behind the scenes, it would be a nightmare attempting to decide who could wear which piece. Mrs Zelenska chose a more toned-down look but was nonetheless impactful in a monochromatic pale-teal ensemble. Her tailored overcoat featured pleated details and she paired the look with modest drop pearl jewellery.Kate Middleton stunned Coronation event-goers in a regal dress by Alexander McQueen, who was also behind her 2011 wedding dress.