Sienna Miller’s M&S Winter Capsule Is Here—11 Pieces That Will Sell Out By the Weekend

Maxine Eggenberger
They say good things come in threes, and that’s certainly the case with Sienna Miller’s latest collection with British high-street favourite, Marks and Spencer. October 31st 2024 marks the third time the iconic duo have collaborated, with the actor bestowing her beautiful, boho touch on M&S’s winter edit. Having closely studied her work thus far, I’m confident when I say this is her best collection with the brand yet.
Given the fact that its release falls just before party season, there are plenty of more fanciful pieces to be had this time around. That said, none of them feel too out there to wear more regularly. From the bias cut satin dress that comes in an Atonement-adjacent shade of emerald green and festive-season ready ruby red to some of the most elegant tailoring I’ve seen from the retailer (Miller wore the cream suit and animal print bag I have my eye on to the collection’s launch party earlier this week), there’s something eveningy for all!
That said, Sienna Miller’s got your day-to-day wardrobe covered, too. From the best pair of barrel-leg jeans I’ve seen at this price point (and, if I’m being transparent, any above it) to a velvet blazer that will instantly elevate said jeans, the edit mirrors Sienna Miller’s approach to getting dressed—being able to throw pieces together in a way that feels effortless and just works. Throw in some Gen Z-appeasing zebra print, cool clutches and fun sparkle and, it’s true, you’ve got a collection that kicks off every winter trend going. Bravo, Sienna!
After taking in the entire collection, I’m pretty convinced that the below 11 pieces will sell out first. Scroll on to see the Sienna Miller X M&S winter pieces I’m putting my name behind, then proceed to shop the rest of the collection in its entirety.
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SHOP MY SIENNA MILLER X M&S 11-PIECE EDIT:
Honestly, my jaw dropped when I saw Sienna Miller carrying this animal print bag.
SHOP THE REST OF SIENNA MILLER'S X M&S WINTER COLLECTION:
Opening Image: Courtesy of Marks and Spencer

Natalie Munro is Who What Wear UK’s news writer and has worked in the fashion industry since she graduated with a degree in Journalism from the University of the Arts London. Natalie’s experience in the industry spans journalistic and styling roles that have seen her work for publications including British Vogue, Conde Nast Traveller, Vogue Ukraine, AnOther Magazine and Elle UK.
With an interest in uncovering the latest fashion trends, Natalie takes a leading role in identifying news for Who What Wear UK. Reporting on a daily basis, Natalie focuses on trends on and off the runway, as well as street style and celebrity fashion. Natalie also creates content for Who What Wear’s social channels including TikTok and Instagram on a weekly basis.
- Maxine EggenbergerDeputy Editor
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