Her husbandPrince William, however, rode into the ceremony on horseback - something a royal expert has revealed it's unlikely we'll ever seeDuchess Katedoing.
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Kate, it seems, is one of the fewmembers of the royal familywho doesn't ride a horse.
And although it has been widely rumoured that Kate is allergic to horses, according toMarcia Moody, the author ofKate: A Biography, the reasonthe Duchesssnubs the hobby is because it simply isn't in her blood.
"Kate doesn't ride, purely because she didn't do it growing up," Marcia toldTown & Country.
"William and Harry were taught from anearly age, but theonly timethey ride now is for polo - they don't go off on hacks likethe queenalways has."
While Kate isn't a fan of horse riding herself, it is something she has encouraged her kids take part in.
Prince Georgehas reportedly been taking riding lessons since he was two-year-old, a source revealed to theDaily Mail.
They said: "William and Katewere keen to getGeorgeon a horse once he was walking confidently.
"Georgeloved his first ride – he was led around a paddock on a rein and shrieked with delight.William and Katewere both there to watch."
Queen Elizabeth on horseback at Trooping the Colour in 1982
Queen Elizabeth IIherself is also a keen equestrian, with the monarch arriving at theTrooping the Colouron horseback many times over the years.
Her Majesty even braved theBritishrain in 1982, as the ceremony was held in the middle of a downpour.