We're Pretty Sure Kate Middleton Has More Blue Coats Than Anyone Else on Earth

Kate wore a caped Mulberry coat during a visit to Ballymena in Northern Ireland, drawing comparisons to the Beauxbatons uniforms seen in Harry Potter and the Goblet of Fire.

Kate got sporty in a navy puffer jacket and matching sneakers while visiting Windsor Park Stadium, home of the Irish Football Association.

For a New Year's service at the Church of St. Mary Magdalene in Sandringham, Kate wore a cerulean coat by Catherine Walker, which she first debuted during the royal tour of Sweden and Norway.

The blue and green coat that Kate wore on a visit to Dundee, Scotland, was the perfect choice, as the tartan is that of Scotland's 3rd Battalion Regiment, known as the Black Watch. The duchess first wore the McQ by Alexander McQueen coat in 2012.

On a visit to McLaren Automotive's new Composites Technology Centre in Rotheram, England, Kate wore an Eponine London coat dress in a bold cobalt hue. This was the look's second outing, as she also wore it in early 2017.

Kate's teal pleated coat dress by Emilia Wickstead is another look she's worn on a number of occasions. When she wore it for a visit to the BBC with Prince William, it was slightly more casually styled than its first outing, on the royal tour of Australia and New Zealand in 2014.

Kate sported a powder blue Alexander McQueen coat for the celebrations marking the centenary of the Royal Air Force, teamed with a matching hat and the Royal Air Force Dacre brooch, a very appropriate piece of jewelry.

While heavily pregnant with Prince Louis, Kate attended the Commonwealth Day service wearing a Beulah coat with a Lock & Co. hat, finished with her favorite Rupert Sanderson suede heels.

Kate's cerulean Catherine Walker coat got its debut during the royal tour of Norway and Sweden, when she teamed it with chocolate brown accessories, including a furry hat.

Kate picked a collarless design by Goat with concealed buttons and a bow at the neck on a royal engagement in Essex, England.

On a visit to the Royal College of Obstetricians And Gynaecologists, Kate wore a blue Jenny Packham coat with white trim over an empire-line dress, and completed the look with a suede clutch and Jimmy Choo pumps.

Wearing a powder blue Seraphine coat over a floral dress for a visit to King's College, the duchess switched up her accessories a little by swapping her usual suede clutch for a quilted design by Jaeger.

The duchess buttoned up in a double-breasted navy blue coat from Hobbs on a royal engagement on behalf of the charity Place2Be. Jimmy Choo pumps completed the look.

A cornflower blue Sportmax coat was given a pop of color with a Beulah London scarf when Kate visited a school in London.

At the Grenfell Tower memorial service at St. Paul's cathedral, Kate wore top-to-toe navy, including a double-breasted Carolina Herrera coat.

Kate layered a light blue Philosophy di Lorenzo double-breasted blazer over a turtleneck and skinny jeans for her take on smart-casual, when attending the Coach Core graduation ceremony.

During the royal tour of Germany and Poland, Kate stepped out in a periwinkle coat by Catherine Walker.

Kate wore a Rebecca Taylor suit jacket and matching skirt for a trip to King's College Hospital.

At a garden party at Buckingham Palace, Kate wore a silky coat dress by Christopher Kane which got its first outing at the Order of the Garter service in 2014.

A pale blue coat dress by Emilia Wickstead with a crossover collar was Kate's choice while on a visit to Luxembourg.

A blue-gray twill coat by Michael Kors was Kate's choice for a Commonwealth service alongside Prince William and Prince Harry. She added a navy hat and pumps, and a Stuart Weitzman clutch.

That Eponine London belted coat dress got its first outing on a visit to the Anna Freud Centre in London, teamed with Rupert Sanderson pumps.

Kate wore a textured Mulberry coat in powder blue to the Nelson Trust Women's Centre in Gloucester, England.

A chic little Catherine Walker peplum jacket with a matching skirt had a chic retro feel when Kate wore them on a visit to the Netherlands.

For a service to celebrate Queen Elizabeth's 90th birthday, Kate wore a custom Catherine Walker coat in pale blue with a delicate lace applique.

Kate's tweedy Michael Kors coat got an outing during a visit to Hampton Court Palace.

While opening a charity shop in Holt, England, Kate wore a blue tweed Missoni coat which she'd previously worn to a wedding in 2017. Prada shoes finished the look.

Kate buttoned up in a military-inspired Alexander McQueen coat for the 75th anniversary of the RAF Air Cadets, finished with her Air Cadets Dacre brooch.

On a visit to Scotland, Kate made a patriotic choice in choosing Scottish designer Christopher Kane, teaming her cobalt coat with Aquatalia boots.

Shortly before Princess Charlotte's birth, Kate stepped out in a navy coat for a service at St. Paul's Cathedral.

The Sportmax coat that Kate wore while pregnant with Prince Louis actually got its debut years before, when the duchess wore it for a visit to the Emma Bridgewater pottery factory.

There's that Missoni coat! Kate's worn this design on a handful of occasions, including a wedding, and a Diamond Jubilee celebration.

Kate also wore the tweed style while attending an event with the Duchess of Cornwall.

A belted peplum jacket in a shade of navy-teal by L.K. Bennett was Kate's choice for a trip to Leicester.

Kate sported Alexander McQueen once again for a parade in Windsor, England. Her double-breasted coat dress featured more than a dozen gold buttons.

Kate's periwinkle brocade coat was an early favorite. She first wore it to a friend's wedding, and then pulled it out again to celebrate Prince Philip's 90th birthday.

On a very early outing before becoming a royal, Kate gave us a glimpse at what would become her signature look, when she wore a navy trench coat to the Cheltenham races.