Sienna Miller Has Assembled the Perfect Autumn Capsule At M&S

When you think about it, a collaboration between Marks & Spencer and Sienna Miller was bound to happen—it was only a matter of time. Two British icons renowned for their enduring style and ability to capture the true essence of Brit dressing have come together, and the outcome promises to be good. Miller is the face of Marks & Spencer's new autumn '23 campaign titled Anything but Ordinary, collaborating with the heritage brand on a collection that upholds M&S's trusted quality whilst exploring fresh colour palettes and trend-led designs that retain an everlasting appeal.


(Image credit: Courtesy Marks & Spencer)

Sienna Miller wears M&S Collection Cable Knit Crew Neck Jumper in Ivory (£35).

Seeped in a bohemian, slightly eclectic (and very British) quality, the collection blends heritage pieces such as a tweed blazer—a favourite of Miller's—with more playful designs. Made up of garments that coordinate with each other to create visually striking ensembles but also hold their own when mixed into the rest of your wardrobe, the collection explores Miller's penchant for high-low dressing. Mirroring her iconic style, the collection includes maxi skirts, sleek wedge boots, cosy knits and sharp blazers.


(Image credit: Courtesy Marks & Spencer)

Miller wears M&S Collection Ombre Tie Waist Pleated Midi Waisted Dress (£50), Padded Bomber Jacket in Midnight Navy (£59), Faux Leather Lizard Effect Jeans Belt (£25), Faux Leather Cross Body Bag (£40), and Leather Wedge Pointed Ankle Boots in Black, (£79).

Well versed in whipping up the best foundational pieces on the market, Marks & Spencer has peppered easy layering tops, crisp, white button-down shirts and well-tailored trousers into the collection, alongside bold colour-blocking and a range of textures and prints. Commenting on the designs, Miller said, "I have always had a genuine love for Marks & Spencer. It's a brand that is part of the fabric of British life and holds special associations for so many people. I am thrilled to be joining this iconic company, fronting their autumn campaign and being a part of their journey in shaping the future of fashion." 


(Image credit: Courtesy Marks & Spencer)

Miller attended the collection launch at The Mall Galleries in London on Tuesday night (5 September).

Miller attended the collection's launch event amongst journalists, influencers and celebrities including Vogue Williams and Felicity Hayward. She opted for a chic all-black, tailored look—an autumnal trend celebrities have been playing into over the past few weeks.


(Image credit: Courtesy Marks & Spencer)

Miller wears M&S Collection Cable Knit Crew Neck Jumper in Soft Lime (£30), Satin Midaxi Slip Skirt in Limeade (£35), Brushed Fringed Scarf in Lime (£18), and Leather Wedge Pointed Ankle Boots in Black, (£79). 


Next Up: I’m Readying My Wardrobe for Autumn With These Transitional Staples From M&S

News Writer

Natalie Munro is Who What Wear UK’s news writer. Previously freelance commerce writer at British Vogue, Natalie’s experience spans journalistic and styling roles, which have seen her work on shoots for publications such as British Vogue, Vogue Ukraine, AnOther Magazine and Elle UK and write for publications including British Vogue and Conde Nast Traveller. With an interest in uncovering the latest fashion trends, Natalie takes a leading role in identifying news and trends for Who What Wear UK, with a particular focus on celebrity style and emerging fashion trends.