The Duchess of Cambridge opted for her go-to dressed down outfit of blazer and skinny jeans.
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She paired the staple items with a Ralph Lauren Breton top and £245 Stuart Weitzman for Russell & Bromley Corkswoon wedges – the same shoes that she wore to visit the British Olympic team's official residence last year to wish them luck ahead of the summer games.
After meeting the Duchess last year, bronze medal winner Rebecca Adlington said, "I just love her shoes. They're much nicer than the sports gear we're wearing this week!"
The event marked Kate's first official solo outing since the birth of her son Prince George.
Since George's birth, the royal has been seen joining husband Prince William to open a marathon in Anglesey in jeans and a Ralph Lauren blazer and also at the Tusk Conservation Awards wearing a sequin Jenny Packham creation.