But we all know how painful they can be, so how does she manage to wear them throughout long royal engagements – all while keeping a smile fixed on her face?
Well, it turns out the 36-year-old has a clever trick for keeping her tootsies comfy.
The brand's website describes its leather insoles as being "designed to cushion the ball of your foot and heels, whilst being thin enough to fit unnoticed into any shoes".
They're even shaped at the front so they can be worn with open-toe shoes – although the Queen very much frowns upon that.
- Insoles for high heels, £14.95 from Alice Bow – buy now
At the time of publication, a source told the magazine: "Kate has ordered a couple of packets, she thinks they are great.
"The insoles are all handmade in Britain from fine Italian leather and promise 'long lasting comfort and confidence.'"
A spokesperson for Alice Bow said: "There has been talk of the Duchess wearing the insoles, but we cannot comment either way.
"We have seen a massive surge in site visits, however."
There are a number of different insoles available on Alice Bow's website, including coloured and personalised options.
There are even bridal insoles, which come in a wedding-appropriate shade of blue.
With prices starting at £14.95, they're probably about the only thing from Kate's wardrobe we can afford.
And if they're good enough for a Duchess…
In more royal news, this is the one thing that went wrong at Prince Harry and Meghan Markle's wedding.
Harry was given a sneak preview of Meghan's wedding outfit BEFORE their big day.
And you can now buy a slice of Princess Diana's wedding cake – but it doesn't come cheap.
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