Sienna Miller’s popular high-street trench coat sells out annually—so I decided to try it on myself.
There’s no single clothing item that represents autumn as effectively as a trench coat. As leaves begin to fall and the weather calls for more than just a light t-shirt and jeans, my go-to choice is always a reliable trench—in nearly any style. One enduring favorite that returns season after season is Sézane’s Clyde trench coat. This French brand is well-known for its sell-out pieces and boasts a strong celebrity following. For instance, Sienna Miller, a long-time fan of Sézane, has been seen repeatedly in the Clyde trench. This prompted me, as a responsible shopping editor, to try out the much-lauded coat myself.
First impressions? The Clyde maintains a beautiful shape while feeling relaxed rather than overly formal. Its slightly oversized design provides an effortless, cool aesthetic that gives the trench a modern touch, and the longline style instantly enhances even the most basic jeans and t-shirt outfit. It offers enough space to wear a knit underneath as temperatures drop, without adding bulk.
What stood out to me the most was the thoughtfulness of its proportions. Trench coats can easily overwhelm a smaller frame, but the Clyde feels intentionally oversized rather than just too large. I chose a size 10 to allow for layering once it gets colder, and it fit my 5'2" frame perfectly. The details are classic and not merely trend-driven, which is exactly what I look for in a coat that I intend to wear for years.
And that’s the charm of the Clyde. It doesn’t attempt to reinvent the trench coat; instead, Sézane has incorporated all the elements that make this style a lasting wardrobe essential and given them a fresh twist. Having finally tried it myself, I see why it reappears each autumn and why its fan base continues to expand.
Continue reading to shop Sézane's Clyde trench coat below.
**Shop The Sézane Clyde Trench Coat:**
- **Sezane Clyde Coat - Light Beige:** A soft, versatile shade perfect for both autumn and spring.
- **Sezane Clyde Coat - Camel - Organic Cotton:** A camel trench that quickly becomes a wardrobe staple.
- **Sezane Clyde Coat - Dark Green:** This olive color is the epitome of autumn.
- **Sezane Clyde Coat - Beige and Moss Green Checks:** Checked trench coats were a major outerwear trend in 2026, showing no signs of waning.
**Shop More Sézane Finds:**
- Scarf jackets exude an inherent elegance.
- The Suzanne tote sold out immediately upon launch—now it’s available again.
- A cape-style funnel-neck trench coat is as chic as it gets.
- The navy shade is incredibly rich and luxurious.
- A cape knit radiates pure elegance.
- This piece embodies the essence of quiet luxury.
- Sleek suede accessories define autumn, and these mules look much more expensive than they are.
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