It's no secret that The Prince and Princess of Wales have taken on many Royal duties over the years in support of her late majesty The Queen, and our current reign, King Charles. Through engagements at home and overseas to having a portfolio of charitable work and patronages, Prince William and Kate Middleton, undeniably, remain very busy serving the country.

And among their most recent royal adventures, late last week the two took part in the Royal Charity Polo Cup 2023 at Guards Polo Club.

But today, we're not discussing the extraordinary sporting skills of Will, but the extraordinary hair look Kate debuted while at the event. Yep, it seems as if K-Mid has only gone and gotten a warm, honey blonde highlights for the 2023 summer season.

Here's a look at the new colour:

kate middleton blonde hairpinterest
Mark Cuthbert//Getty Images

And another, just to be sure:

kate middleton blonde hairpinterest
Mark Cuthbert//Getty Images

The naturally blended highlights are so subtle that her hair looks very much sun-kissed.

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Now, you may not think that there is much of a difference between her hair RN and just a few weeks ago, but if you take a closer look, it seems as if she has added some super fine babylights through the face-framing sections of her hair.

If you needed any more convincing, just take a look at the Princesses chestnut-toned locks from a few weeks ago:

kate middleton blonde hairpinterest
Karwai Tang//Getty Images

So, it seems that it's not only Billie Eilish who has lightened her hair for summer. Best get those hair colouring appointments booked pronto!

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Lia Mappoura
Beauty Writer

Lia Mappoura (she/her) is the Beauty Writer at Cosmopolitan UK, with over four years of experience reporting across the brand's print, social, video and digital platforms. Lia covers everything from emerging trend analysis to viral celebrity hair and makeup moments, making her an expert at spotting the season’s next big beauty look (before it takes over social media feeds).

In 2025, she was named The Rising Media Star at the Love Perfume Awards with The Perfume Shop, recognised for her outstanding digital fragrance content and for building genuine authority within the space. She is passionate about challenging outdated beauty stereotypes, championing inclusive representation in beauty, and educating readers on the trends, products and conversations shaping the industry today. Follow her on Instagram or find her on LinkedIn