Sophie, 57, was every inch the doting mother as she whipped out her smartphone to take photos of her 18-year-old daughter carriage driving, offering onlookers a full look at her elegant outfit in the process. The Countess teamed her double-breasted, gold-buttoned blazer with a white midi skirt featuring oversized pocket detailing. She wore her jacket buttoned up and layered over a pink shirt.
WATCH: The Queen's surprise appearance at Royal Windsor Horse Show
Prince Edward's wife wore her blonde hair pulled back in a ponytail and kept her accessories understated, opting for a simple pair of gold hoop earrings.
She grinned with delight as Lady Louise, driving the late Duke of Edinburgh's carriage, led the Fell Pony Society centenary parade.
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The Countess of Wessex teamed a structured blazer with a feminine skirt
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The Countess of Wessex had a front row seat at the event alongside Prince Edward and her mother-in-law the Queen.
Khaki Double Breasted Tuxedo Blazer, £75, River Island
The monarch, who was snug under a cosy check blanket, was all smiles as she watched her granddaughter partake in the event, which was a favourite of her late grandfather Prince Philip.
Sophie is fresh from her royal tour of the Channel Islands alongside Prince Edward, during which she delighted royal style watchers with her fashion choices.
Sophie was joined by the Queen and Prince Edward
On Tuesday, the Countess wore her most fabulous trousers to date; in the form of some crisp white flares that came complete with polished printed checks.
She teamed them with espadrilles and the most stunning green tailored jacket, and carried a stone-coloured clutch.
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