NOTE - I am taking a short hiatus to redesign the site. The site will be relaunched in May with updated content and a fresh new look. Thanks for your understanding

Smythe “Duchess” Blazers

Smythe Duchess / One Button Blazer worn by Kate Middleton in blue and green

Wool blazers in green & blue

Kate Middleton owns the Smythe “Duchess” blazer in two different colours:  green and blue.

Kate Middleton owns two smythe blazers. One in blue and one in green.

She first wore the blue version of the blazer in 2011, during the Royal Visit to Canada and the USA.    Here’s a photo of her at Heathrow airport, shortly before departing for the tour:

Kate is on the tarmac at Heathrow, heading off to Canada

She’s worn the blazer on public engagements back home in the UK too.  She’s wore it on multiple occasions during the London Olympics in 2012, and again to the 2014 Commonwealth Games in Glasgow.

Kate looked elegant in her blue ensemble, including the Smythe Blazer

She wore the green blazer for the first time in 2016 during a visit to Haida Gwaii in Canada.

Kate Middleton wearing her Green Smythe blazer in Canada

Made in Canada:

The blazers are designed and made in Canada by Smythe, who are a Canadian company.  Kate chose the blazers for both visits to Canada as a nod to the host country.

SportsAid Athlete Workshop 2013

Does Kate wear the “One Button” or the “Duchess” blazer?

The answer is BOTH!  The style used to be called “One Button” but after Kate wore it in 2011, Smythe renamed it “Duchess”  In 2016, the style is widely referred to as “Duchess”.

Kate Middleton wearing the blue Smythe blazer during a visit to the Royal Air Force Tattoo in 2016

About the Smythe blazer:

The blazer is preppy in style and crafted from high-quality Italian wool. The blazer has a notched lapel, goldtone button on the front, princess seams and two front pockets.  Saks describe the Smythe Duchess Blazer as “impeccably tailored”.  

Kate Middleton wearing her 'army green' blazer by Smythe Les Vestes

Where to buy Kate’s Smythe Blazers:

Here’s where stocks the blazers and where they’re available to buy at the moment.  Last updated: 2nd March 2017.


  • ShopBop. Until March 4th, get 20% off with the code GOBIG17.  Free delivery, ships worldwide.
  • Saks Fifth Avenue. Free delivery. Ships worldwide.


  • Shopbop. Until March 4th, get 20% off with the code GOBIG17.  Free delivery, ships worldwide.
  • Saks Fifth Avenue. Free delivery.  Ships worldwide.


Kate Middleton's green duchess blazer


The “one button” or “duchess” blazer also comes in a number of other colours, available at Neiman Marcus, NordstromShopBop and Revolve Clothing.  Use the widget below to browse some of my favourites:

About Smythe:

The company’s full name is Smythe Les Vestes. All of the blazers are made in Canada.  Smythe specialise in artful tailoring and achieving a great fit.

When Kate wore the blue blazer back in 2016, Smythe released a statement saying:

“We design with a women like Catherine Middleton in mind: tailored and effortlessly chic.  Needless to say we are delighted that Her Royal Highness has included Smythe in her first visit to Canada.”


Steal Kate Middleton's style: