A wet weather plan kept the royals from parading at this year's Order of the Garter ceremony
Credit: PA Images/Sipa

Princess Kate wore regal red – and defied the effects of the soggy day – for a landmark royal ceremony on Monday.

In a dress and coat by Catherine Walker & Co. (a royal rewear!) and her wedding earrings by Robinson Pelham, Kate joined the rest of the senior royals at the annual gathering of the ancient order of chivalry, the Order of the Garter.

Although the rain ultimately held off, a wet-weather plan was put into action – meaning that Prince William and Prince Charles and the rest of the royal Knights (and their commoner counterparts) drove to the annual service at Windsor Castle on Monday rather than walk down the hill wearing their Order finery.

Kate arrived with mother-in-law Camilla, Duchess of Cornwall (wearing a champagne gold silk dress and coat by Anna Valentine with hat by Philip Treacy) a few minutes earlier by the side Galilee Porch door of St. George’s Chapel at the castle.

William and Charles were then driven past and down to the north nave door. The royal Knights, decked out in the splendid long velvet robe of the ancient order, held their ostrich-feathered caps in their laps.

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A highlight of the royal calendar, this year’s Order of the Garter ceremony came after three heady days of celebrations for Queen Elizabeth‘s 90th birthday – a church service, the annual Trooping the Colour (when Princess Charlotte made her big balcony bow), and the Patron’s Lunch.

Spotted in the door pocket of the Queen’s car when she arrived was the 2015 edition easy-read AA road map (cost: $14!)

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The service celebrates the oldest, and most senior, order of chivalry in Britain.

William became the 1,000th member of the order in 2008 and Kate was among the smiling crowds then.

And she was there again in 2014 alongside Sophie Wessex as they watched their husbands take part in the parade.