The Emilia Wickstead Anatola pleated polka-dot crepe shirtdress was worth £1,565, but had 70 per cent off in the sale, making it just £469.
The belted shirt dress featured a midi design with long sleeves and a pleated skirt, in a bold monochrome polka dot design.
In typical “Kate effect” style, the dress sold out within hours of the Duchess appearing on the show, but similar styles are available on the high street – including a belted polka dot dress at & Other Stories, another of Kate’s favourite brands, for just £95.
Kate teamed the look with her favourite Castañer Carina tan wedges, which retail for £120.
The chic shoes are also available in other colours online, though the tan shade goes with anything as Kate often wears them with different looks from her impressive wardrobe.