She's known for her iconic and classic sense of style, but the internet seems to think Kate Middleton has had a big fashion "fail".

Stepping out to visit the Henry Fawcett Children's Centre in Kensington, the Duchess of Cambridge wore a gorgeous violet silk-crepe Gucci blouse, complete with a pussy-bow detail.

However, fans were quick to notice the royal mum-of-three appeared to be wearing her blouse backwards.

Taking to social media, royal watchers pointed out that the Gucci blouse is supposed to be worn with the buttons along the back of the shirt.

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Kate wore the top buttons to the front. Photo / Getty Images
Kate wore the top buttons to the front. Photo / Getty Images

According to Nordstrom's product description of the top, the $2033 pussy-bow blouse features a "row of dainty covered buttons inching down the back."

However, photographs of the Duchess show that when she wore the piece, the button closures were at the front instead.

Fans also noted that the cuffs on Kate's top were facing forwards, rather than to the back and sides, as the product image suggested.

The Gucci blouse was worn buttons to the back on the Nordstrom website. Photo / Nordstroms
The Gucci blouse was worn buttons to the back on the Nordstrom website. Photo / Nordstroms

However, some fans believed that it was clearly an intentional fashion choice and not an accident.

People magazine also speculated that perhaps the top was customised with a front button closure for the Duchess, which wouldn't be unusual for a member of the royal family.

The Duchess paired her top with a pair of black wide-leg, high-waisted Jigsaw trousers.

To finish off her look she accessorised with a pair of tonal pointed-toe pumps and a miniature lilac faux croc bag by Aspinal of London.

Whether it was accidental or deliberate, we think she looks amazing.

This story originally appeared on The Hits and has been republished with permission.