We're obsessed with the Sienna Miller x M&S collab - here are the 9 best pieces
By A Mystery Man Writer
Description
Sienna Miller has teamed up with Marks & Spencer to front its latest autumn/winter 2023 collection, these are our favourite looks
![We're obsessed with the Sienna Miller x M&S collab - here are the 9 best pieces](https://hips.hearstapps.com/hmg-prod/images/shearling-aviator-jacket-79-t495024-64f74092e78de.png?crop=1xw:1xh;center,top&resize=640:*)
Sienna Miller M&S: Sienna Miller's the new face of Marks & Spencer
![We're obsessed with the Sienna Miller x M&S collab - here are the 9 best pieces](https://i.dailymail.co.uk/1s/2024/01/04/11/79609797-0-image-a-23_1704367135317.jpg)
Fashion Finder Daily Mail Online
![We're obsessed with the Sienna Miller x M&S collab - here are the 9 best pieces](https://hips.hearstapps.com/vader-prod.s3.amazonaws.com/1694075332-wool-trousers-marks-spencer-sienna-miller-autumn-64f9899429a2d.jpg?crop=1xw:1xh;center,top&resize=980:*)
Sienna Miller partners with Marks & Spencer on its autumn range
![We're obsessed with the Sienna Miller x M&S collab - here are the 9 best pieces](https://hips.hearstapps.com/hmg-prod/images/sienna-miller-marks-and-spencer-autumn-campaign-64f889cbe9c47.jpg?crop=1xw:0.535673407096528xh;center,top&resize=1200:*)
Sienna Miller partners with Marks & Spencer on its autumn range
![We're obsessed with the Sienna Miller x M&S collab - here are the 9 best pieces](https://images.bauerhosting.com/celebrity/sites/3/2022/10/self-portrait-x-Mytheresa-10-scaled.jpg?auto=format&w=1440&q=80)
Self-Portrait's Party Capsule Is Now Available On MyTheresa
![We're obsessed with the Sienna Miller x M&S collab - here are the 9 best pieces](https://hips.hearstapps.com/hmg-prod/images/sienna-miller-marks-and-spencer-autumn-campaign-64f889cbe9c47.jpg?crop=1.00xw:0.357xh;0,0.253xh&resize=640:*)
Sienna Miller partners with Marks & Spencer on its autumn range
![We're obsessed with the Sienna Miller x M&S collab - here are the 9 best pieces](https://i.ytimg.com/vi/Kmqd33u11NQ/maxresdefault.jpg)
I CHECKED OUT THE M&S X SIENNA MILLER COLLECTION AND IT'S ANYTHING
![We're obsessed with the Sienna Miller x M&S collab - here are the 9 best pieces](https://cdn.getthegloss.com/files/2022/03/3c5c7990-9b38-11ec-af5d-9d314eed0cf6-luxe-loungewear-2.jpg)
Sienna Miller x M&S Autumn: the capsule wardrobe collection
![We're obsessed with the Sienna Miller x M&S collab - here are the 9 best pieces](https://hips.hearstapps.com/hmg-prod/images/trainers-t028670t-64f7414bd180e.png?crop=1xw:1xh;center,top&resize=640:*)
Sienna Miller M&S: Sienna Miller's the new face of Marks & Spencer
![We're obsessed with the Sienna Miller x M&S collab - here are the 9 best pieces](https://images.bauerhosting.com/legacy/media/60b6/4a48/62ee/e243/c5c5/0d9f/LOEWE%20Paula's%20Ibiza%202021%20by%20Gray%20Sorrenti%2011-2.jpg?ar=16%3A9&fit=crop&crop=top&auto=format&w=undefined&q=80)
The Boho Trend Is Back For 2021
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