We think these might be her favorite shoes! The Duchess owns the Rupert Sanderson "Malory'' pumps in four colors: nude, black, plum and red. Photo: Getty

Aside from dresses, Duchess Kate also owns this Smythe blazer (aptly called "The Duchess blazer") in both navy and olive green. Photo: Getty

Duchess Kate had this custom Emilia Wickstead dress made in blue and pink. Photo: Getty

The Duchess wore this Amanda Wakeley dress in both light grey and gunmetal. Photo: Getty

For her 2011 tour of Canada, Duchess Kate wore a purple version of her now-iconic engagement dress, by Issa. Photo: Getty

The Duchess owns this dress by Preen in two colors—red and black. Photo: Getty

For a recent appearance during her tour of Poland and Germany, Kate wore this blue Catherine Walker coat-dress, which she also owns in red (albeit with slightly different lapels). Kate even wore the same style of shoe for both occasions — the Gianvito Rossi "Gianvito" pumps, on the left in "claret" and on the right in "praline." Photo: Getty