Kate Middleton Stuart Weitzman bootsHUSSEIN ANWAR/SIPA

Catherine, Duchess of Cambridge joined her sister, Pippa, at the horse races last Friday—and we’ve found just the pair of high-heeled boots she wore to climb the bleachers in. The royal mother-to-be chose Stuart Weitzman‘s smooth, suede “Zipkin” boots, complete with zippers that come to the top of the knee-high design and reinforced rubber soles, and you can snag her weather-proof look, too—and for less. The black incarnation of Kate’s chocolate Weitzman heels retail for $625, but they’re now available on zappos.com for $435. So get shopping!

Plus, see more of Kate’s best looks.

KATE'S BEST LOOKS

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The Custom Coat Pippa Wore to the Races
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James Franco’s Stuart Weitzman Video