Should you wish to establish immediate kinship with a millennial woman, you need say only one word: ‘Sienna’. The friends I have made in adulthood might have different biographies and backgrounds, but despite the varying details and references, Sienna Miller is the great unifier. A guaranteed crowd pleaser. A source of shared interest, adoration and obsession.

Unlike most things from our youth (see: orange fake tans, blue WKDs), our enthusiasm for Miller has not diminished over the intervening decades. Why? The style. Specifically the, sorry-not-sorry, boho chic that felt the right amount of man-repelling and unapologetically pretty. Hitting at a time pre-social media but peak-paparazzi and weekly celebrity mags, each image of her that dropped was a jolt of excitement. It felt refreshing, invigorating.

FIND OUT MORE ON ELLE COLLECTIVE

Read Next

So, what a thrill then that today Miller buddies up with another British icon: Marks & Spencer. Following the runaway success of the 33-piece collection she released earlier this year, the actor has collaborated with the high-street giant once again – but this time, to design a party wear capsule.

sienna miller wears an outfit from marks and spencer collaboration
courtesy m&s
sienna miller wears an outfit from marks and spencer collaboration
courtesy marks & spencer

SHOP SIENNA MILLER'S M&S COLLABORATION HERE

‘This second collection is very much a party edit for the festive season,’ explained Miller. ‘It’s got tailoring, faux fur, party dresses, statement prints, embellishment, co-ordinating accessories and also my favourite jeans from the first collection, in two new washes. Seeing my designs in the real world is so rewarding. I love how each individual wears and styles them and I can’t wait to see their reaction to round two this winter!’

An unapologetically nostalgic romp through the heydays of disco, the collection takes inspiration from the legendary Studio 54 as well as pieces from her own wardrobe –particularly her favourite vintage finds (see: those sequinned mini dresses and killer strappy satin sandals).

sienna miller wears a green dress from her marks and spencer collaboration
courtesy m&s
sienna miller wears a sequin mini dress from her marks and spencer collaboration
courtesy m&s

Other standouts? A deep green velvet blazer that simply screams Christmas party, the perfect goes-with-everything silk pussybow blouse, a Nineties-esque strappy chocolate brown slip dress and an epic leopard print belt. There’s even the supremely chic white three-piece suit that Miller wore to the launch party earlier this week, that would be perfect for a winter bride.

sienna miller wears an outfit from her marks and spencer collaboration
courtesy m&s

Top of our wishlist, however, are the barrel-leg jeans – and Sienna agrees: 'It's always so hard to pick a favourite piece; but I love the jeans, I LOVE wearing jeans,' she said. The slouchy denim style sold out almost immediately in her last collection, and this time they're back in two new colourways. We have a feeling these are going to be the jeans of the season – so get them while you still can...

Shop Sienna Miller's M&S Collaboration
Barrel-Leg Jeans
Sienna Miller X M&S Barrel-Leg Jeans
Velvet Animal-Print Jacket
Sienna Miller X M&S Velvet Animal-Print Jacket
Sequin Mini Dress
Sienna Miller X M&S Sequin Mini Dress
Pure Silk Tie-Neck Ruffle Blouse
Sienna Miller X M&S Pure Silk Tie-Neck Ruffle Blouse
Chain Detail Satin Sandals
Sienna Miller X M&S Chain Detail Satin Sandals
Lace High-Neck Long-Sleeved Top
Sienna Miller X M&S Lace High-Neck Long-Sleeved Top
Seam-Detail Strappy Pure Silk Maxi Dress
Sienna Miller X M&S Seam-Detail Strappy Pure Silk Maxi Dress
Barrel-Leg Jeans
Sienna Miller X M&S Barrel-Leg Jeans
Satin Ruched-Detail Maxi Dress
Sienna Miller X M&S Satin Ruched-Detail Maxi Dress

Sienna Miller's party collection is available from M&S.com and in stores from today.


ELLE Collective is a new community of fashion, beauty and culture lovers. For access to exclusive content, events, inspiring advice from our Editors and industry experts, as well the opportunity to meet designers, thought-leaders and stylists, become a member today HERE.

Headshot of Katie O'Malley
Katie O'Malley
Site Director

Katie O'Malley is the Site Director on ELLE UK. On a daily basis you’ll find Katie managing all digital workflow, editing site, video and newsletter content, liaising with commercial and sales teams on new partnerships and deals (eg Nike, Tiffany & Co., Cartier etc), implementing new digital strategies and compiling in-depth data traffic, SEO and ecomm reports. In addition to appearing on the radio and on TV, as well as interviewing everyone from Oprah Winfrey to Rishi Sunak PM, Katie enjoys writing about lifestyle, culture, wellness, fitness, fashion, and more.

Headshot of Clementina Jackson
Clementina Jackson
Site Fashion Editor

Clementina Jackson is Acting Site Fashion Editor at ELLE UK, working across news and features, trends, e-commerce and SEO. She was previously Fashion Editor at Cosmopolitan and Women’s Health, and Acting Digital Fashion Editor at ELLE UK, where she was named as a PPA 30 Under 30 award winner for her work on size inclusivity. An experienced fashion, travel and luxury lifestyle journalist, Clementina has also written for Harper’s Bazaar, Vanity Fair, Condé Nast Traveller, Tatler, Red and Italy Segreta.