Princess Kate’s With Nothing Underneath shirt is a must-have staple, available in sizes 8 to 18. Crafted from 100% Tencel and B Corp certified, it’s a sustainable choice that doesn’t compromise on style. With its longer length, subtly off-the-shoulder cut, and relaxed drape, it’s versatile enough to dress up with tailored trousers or down with jeans, making it a smart buy for any wardrobe. While Kate opted for the off-white shade, the shirt also comes in a range of other colourways, including a striped pattern.

This crisp white button-down offers a similar polished yet effortless vibe. Available in sizes 4 to 22, it's made from 100% cotton, making it a breathable and timeless wardrobe essential. It comes in both regular and petite cuts, ensuring a flattering fit for all body types. It also comes in a range of colourways, including a playful pink-and-white stripe for a modern twist on the classic.

This classic white shirt channels the same polished simplicity as Princess Kate’s design. Available in sizes 8 to 22, it’s made from 100% cotton. The cut is slightly boxy with a pleat at the back, giving it a relaxed yet structured shape that works for both smart and casual styling. While the crisp white version is closest to Kate’s look, it also comes in navy for a versatile wardrobe update.

This H&M option offers an elevated twist that Princess Kate would no doubt approve of. Available in sizes XXS to XXL (excluding XS), it’s tailored in a slim fit with a sharp turn-down collar, giving it a sleek and modern edge. Subtle shoulder pads, a favourite style of Kate’s, and a nipped-in waist create a flattering silhouette, while long sleeves with a slit and buttoned cuffs add refined detailing. It also comes in a chic light blue stripe for a fresh alternative.