If there’s one print that never really goes out of style, it’s polka dots – and right now, they’re firmly back at the top of the fashion agenda.

Leading the charge, as always, is the Princess of Wales, who has quietly built an entire wardrobe around the timeless pattern. From floaty midi dresses to sharply tailored silhouettes, we’ve counted at least 18 different polka dot designs worn by Princess, 44, over the years. But one that truly stands out is her Alessandra Rich number.

It’s become something of a signature: classic, feminine, and just the right amount of statement without ever trying too hard. The only catch is its four-figure designer price tag.

Which is where the high street steps in. If you’ve been eyeing up the trend but don’t fancy the royal price tag, you’re in luck. I went on the hunt for a similar style that delivers the same elegant feel, but for under £50.

This £42 polka dot dress from Roman offers a slightly different take on Catherine’s iconic look. While the royal version leans into a high neckline and structured silhouette, this design softens things with a more relaxed V-neckline and a gently cinched waist, giving it a more feminine, modern edge.

Crafted in a lightweight, floaty fabric, it features long sheer sleeves and a softly pleated skirt. It’s available in sizes 10 to 20, and it also comes in a navy colourway – a shade Catherine has leaned on time and time again.

Meanwhile, the cut makes it perfect for occasions while still being easy to throw on, striking that sweet spot between put-together and effortless, whether you style it with heels and a clutch or keep things relaxed with boots or flats.

And shoppers are already loving it. One reviewer wrote: “It’s a very nice dress, and the design is very pretty.”