I have to admit that I'm not usually one to be inspired by celebrity outfits, but Sienna Miller is one of the exceptions (along with Zoë Kravitz and Hailey Bieber, of course). There's something about the OG boho babe that makes me want to be more free-spirited. She's one of the few A-listers I would like to see out and about getting papped more often so that I can see what she's wearing. Luckily, Sienna has been out and about lately. And it's perfect timing, as we get to see what the star has been wearing for autumn. After studying all of her recent red carpet and off-duty looks, I would like to think I've decoded the six steps to achieving Sienna Miller's new-season capsule wardrobe. It just so happens to include a sprinkling of Chloé autumn/winter 2024 ruffles, the most-loved bag of the year, and the key print you most likely already own.
With this in mind, I'm going to be updating my classic capsule wardrobe with this Sienna-approved edit, and once you see the six items, you will too. Consider this your guide on how to dress like one of the best style icons Britain has to offer.
See Sienna Miller's Autumn Capsule Wardrobe
1. Barrel-Leg Jeans
Style Notes: I've been on the fence about barrel jeans– (I'm 5'5," so wasn't sure if they would suit me), but Sienna and I are the same height (the only thing we probably have in common), so now I'm convinced. I love how she added heels to show off the exaggerated silhouette and kept the look polished with a structured blazer. But I would also style them with a jumper and loafers.
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Of course, Arket has already ticked off autumn's key jean style.
Ecru jeans needn't be reserved just for summer. Try them out with luxe suede, leather, and cashmere textures.
These come in waist sizes 24–40.
Love the twisted seam on this COS pair.
2. Ruffle Dress
Style Notes: Boho is well and truly back, and Sienna has already been spotted in Chloé's spring/summer 2025 collection with this floaty ruffle dress. Although she's skipping a season, Sienna has translated the look for autumn by adding glossy knee-high boots. And considering us mere mortals won't be wearing boho dresses on the red carpet, for everyday life, just add a suede or leather jacket.
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Sienna would 100% wear this.
Just add a rope belt and suede boots.
Well done, & Other Stories.
The OG Chloé dress is an investment, but one you would never regret.
3. Suede Bag
Style Notes: Sienna has updated the classic wardrobe staples––a blazer and blue jeans––with the addition of a suede bag, aka the bag of the season. No matter your style, desired bag size, or budget, they're quite literally everywhere right now, so you're bound to find the one. I've saved you from having to start the search…
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This has been in my thoughts for a few months now.
This looks so premium.
The shape fits nicely into the boho trend.
A dreamy faux-suede iteration.
4. Leather Jacket
Style Notes: The humble leather jacket may not be anything new, but naturally, Sienna has made it infinitely more cool by zipping up over yet another boho dress. Opt for cropped lengths and bomber shapes to achieve the look and switch the wedges for tall boots to make it more daytime-appropriate.
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Just add this over a white dress with wedges to get the Sienna look.
One of our favorite styles is on sale.
This Mango version has a retro feel, and I'm into it.
If you prefer faux leather, this brown style will be for you.
5. Leopard-Print Trousers
Style Notes: Unless you've been living sans social media, you will have noticed that leopard print is a thing once again. The print is synonymous with the autumn/winter months, and Sienna shows an easy way to style it. Make like the A-lister and keep it classy by styling it with neutral separates.
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Like the leopard waistcoat, there's no doubt these Damson Madder trousers will sell out fast.
Of course, leopard-loving Ganni has a pair.
A fun way to update your favorite jeans.
A slightly more statement pair that comes in three lengths and sizes 24–34.
6. Trench Coat
Style Notes: Whenever I think of Sienna's outfits (more often than ever recently), I always see a trench coat. The Burberry poster girl has always nailed effortless ways to style the classic style, and this season is no different. As seen here, a cozy cashmere knit and belted tailored trousers will do the trick.
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As one of the faces of Burberry, of course, Sienna has worn its iconic trench coats.
The contrast colour gives the classic coat a fun twist.
The dream.
It also comes in black.
This post originally appeared on Who What Wear UK.
