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
(Image credit: Getty)
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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Arket
Barrel-Leg Jeans
Of course, Arket has already ticked off autumn’s key jean style.
AGOLDE
Balloon High-Rise Barrel-Leg Organic Jeans
Ecru jeans needn’t be reserved just for summer. Try them out with luxe suede, leather, and cashmere textures.
ALIGNE
Markus Rigid Horseshoe Jean
These come in waist sizes 24–40.
COS
Twist Jeans Barrel
Love the twisted seam on this COS pair.
2. Ruffle Dress
(Image credit: Getty)
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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MANGO
Semitransparent Chiffon Dress With Ruffles
Sienna would 100% wear this.
H&M
Flounce-Trimmed Dress
Just add a rope belt and suede boots.
& Other Stories
Ruffle-Trimmed Midi Dress
Well done, & Other Stories.
CHLOÉ
Wrap-Effect Asymmetric Gathered Silk-Georgette Turtleneck Midi Dress
The OG Chloé dress is an investment, but one you would never regret.
3. Suede Bag
(Image credit: Getty)
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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Manu Atelier
Le Cambon 35 Deep Brown Suede
This has been in my thoughts for a few months now.
Reformation
Medium Silvana Bucket Bag
This looks so premium.
KHAITE
Lotus Mini Suede Tote
The shape fits nicely into the boho trend.
JW PEI
Hana Medium Faux Suede Tote Bag – Dark Olive
A dreamy faux-suede iteration.
4. Leather Jacket
(Image credit: Getty)
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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COS
Oversized Collared Leather Jacket
Just add this over a white dress with wedges to get the Sienna look.
Whistles
Clean Bonded Leather Jacket
One of our favorite styles is on sale.
MANGO
100% Leather Jacket
This Mango version has a retro feel, and I’m into it.
River Island
Faux Leather Oversized Biker Jacket
If you prefer faux leather, this brown style will be for you.
5. Leopard-Print Trousers
(Image credit: Backgrid)
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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Damson Madder
Rafe Pant Leopard Print
Like the leopard waistcoat, there’s no doubt these Damson Madder trousers will sell out fast.
GANNI
Leopard Betzy Cropped Jeans
Of course, leopard-loving Ganni has a pair.
Topshop
Topshop Mid Rise Column Jeans in Leopard Print
A fun way to update your favorite jeans.
Never Fully Dressed
Curve Love Mid Rise Slouchy Jean
A slightly more statement pair that comes in three lengths and sizes 24–34.
6. Trench Coat
(Image credit: Backgrid)
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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BURBERRY
Chelsea Long Organic Cotton-Gabardine Trench Coat
As one of the faces of Burberry, of course, Sienna has worn its iconic trench coats.
COS
Layered Double-Breasted Trench Coat
The contrast colour gives the classic coat a fun twist.
BOTTEGA VENETA
Belted Leather-Trimmed Cotton-Garbardine Trench Coat
The dream.
MANGO
Double-Breasted Cotton Trench Coat
It also comes in black.
This post originally appeared on Who What Wear UK.
