The Duchess of Cambridge's Fashion Secret? Her Perfectly Tailored Coat Collection

In Edinburgh, which was the Duke and Duchess of Cambridge's first stop on their Royal Train tour in December 2020, Kate rewears her blue Catherine Walker coat with a high neck and asymmetric closure. The duchess accessorized the coat with black gloves, black suede boots, and a blue floral face mask from Amaia.

Kate gives us a fresh take on military chic while visiting City Hall in Bradford's Centenary Square in January 2020. Pictured is one of the duchess's favorite pieces, a long army-green coat from Alexander McQueen.

To kick off the Duke and Duchess of Cambridge's three-day national tour aboard the Royal Train in December 2020, Kate rewears her favorite Alexander McQueen coat, accessorizing it with a tartan scarf for a subtle bit of festive flair.

Long, sleek, and double-breasted seems to be Kate's jacket style of choice these days. This vibrant red number with black buttons — which she wears during a visit to St. Bartholomew's Hospital in London in October 2020 — is by one of her favorite brands, Alexander McQueen.

During a visit to the University of Derby ahead of World Mental Health Day in October 2020, the duchess wears a coat with a more casual silhouette from Massimo Dutti, layering it over a cashmere jumper from the same brand.

Even when she's at her most casual — like she is here on a visit to the Teagasc Research Farm in Carlow, Ireland — the duchess's coats and jackets are still incredibly stylish and flattering. Case in point: this cropped and belted number from classic Irish brand Dubarry.

On a trip to Wales in February 2020, Kate wears a navy-blue military-inspired coat from Hobbs, which features burnished buttons, oversize pockets, and shoulder epaulettes. Since the weather is particularly blustery, the duchess wears a scarf from Beulah London, which she neatly tucks into the coat.

Kate has owned this Reiss coat since before she was a duchess. Here she wears it during her visit to Ireland with Prince William in March 2020. We first spotted her wearing the wool/cashmere white coat with contrasting black buttons to William's RAF graduation ceremony in 2008.

Kate wears a sleek Massimo Dutti camel overcoat to visit the Ely and Caerau Children's Centre in Cardiff, Wales, in January 2020.

Teal is an unexpected color choice for the duchess, seen here during a visit to a London nursery school in January 2020. She made it work with her style by choosing a coat with a classic, streamlined silhouette and layering it over simple pieces like a white jumper from Sézane and black trousers.

Kate wears a red Catherine Walker coat to the 2020 Commonwealth Day service.

Kate's love for a smart Catherine Walker coat in undeniable. Here, she wears the same burgundy coat dress to the Sandringham Christmas Church service in December 2018.

The duchess knows that when you love a look, get it in multiple colors. She wears a forest green version of her red Catherine Walker coat while attending an event at Westminster Abbey in November 2018.

During her tour of Ireland in March 2020, the duchess wears her forest green Catherine Walker coat over a green silk peplum dress by Alessandra Rich.

The duchess wears a decadent gray fur-trimmed coat for the Sandringham Christmas Church service in 2019.

Kate's gorgeous powder-blue coat reminds us of the character Fleur Delacour from Harry Potter. Pictured here, the duchess attends an event at the Braid Arts Centre in February 2019.

While hitting the Holmenkollen ski jump in Norway in February 2018, Kate shows off the practical side of her travel wardrobe by wearing a red and white Kjus down jacket.

While stepping out in Sunderland to open an arts and music center in 2018, Kate wears a custom military-inspired Dolce & Gabbana coat. She accessorized with a matching clutch, black gloves, tights, and a pair of suede Tod's pumps.

Kate wears a royal blue coat by the British label Goat with a pair of G. Collins & Sons diamond earrings and Stuart Weitzman pumps while attending an event in February 2018.

While accompanying Prince William to a SportsAid event in March 2018, Kate leaves her cream Goat coat open to reveal a floral Hobbs top and black skinny jeans.

Kate steps out on behalf of the Royal Foundation to attend a symposium at the Royal Society of Medicine in London wearing a bespoke green coat by Jenny Packham with bow detailing and a matching green dress in March 2018.

During the annual Irish Guards St. Patrick's Day Parade at Cavalry Barracks in March 2018, Kate gets festive in a vibrant green coat by Catherine Walker with a faux-fur collar and cuffs from Troy London. She accessorized with a pair of Kiki McDonough earrings, a Gina Foster Millinery hat, Cornelia James gloves, and Tod's heels.

While attending a Familylinks event in March 2018, Kate wears a JoJo Maman Bébé cream coat. She accessorized with a burgundy clutch, matching pumps, and Annoushka pearl earrings.

During a visit to the Royal College of Obstetricians and Gynaecologists in February 2018, Kate wears a bespoke Jenny Packham coat over a matching dress. She accessorized with a clutch, Jimmy Choo pumps, and sapphire jewels.

On the final day of a royal tour of Sweden and Norway in February 2018, Kate wears a chic military-inspired burgundy Dolce & Gabbana coat with Tod's shoes, black tights and gloves, and a Mulberry clutch.

Kate wears a red and white houndstooth Catherine Walker coat during the royal tour of Sweden and Norway in January 2018.