The new royal wore another dress from one of her favourite high street stores, Reiss, for the day - which became an instant sell-out as soon as it was identified.
The Duchess, teamed the chiffon 'Peacock dress' - which retails at £195 - with a cream tweed Joseph jacket, a taupe fascinator, nude LK Bennett heels and a gold box clutch - also from LK Bennett.
Her hair was pulled back into an elegant chignon, while make-up was kept natural, and added a touch of sparkle with Kiki McDonough droplet earrings.
Click on the gallery below to see our pick of Kate's perfect 10 style moments:
The Perfect 10: Kate Middleton
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