Sienna Miller’s M&S collection is now available to shop

Now, Miller is solidifying the relationship with a co-designed collection inspired by the most iconic pieces in her own wardrobe. “I have always had a genuine love for M&S – it’s a brand that is part of the fabric of British life and holds special associations for so many people,” says Miller. “Seeing the reaction to the autumn campaign that I fronted was phenomenal. To collaborate on a womenswear design project made total sense. I can’t wait to see what customers think of the collection.”

Pure Cotton Broderie Blouse

Pure Cotton Utility Jacket

Pure Cotton Striped Shirt

Printed Wide Leg Trousers

The 33-piece edit is an ode to Miller’s well-documented brand of modern bohemia, blending 1970s prints with vintage-inspired details, fluid silhouettes and rich textural contrasts.

Sienna Miller at the Chloé autumn/winter 24 runway show

Drawing from pieces the A-lister has worn and loved over the years, the line-up includes a beaded tank top in an ode to her trend-sparking Glastonbury festival looks – best worn with denim shorts or breezy trousers – and a barrel-leg jean that strikes the perfect balance of polish and ease (trust us: the denim silhouette of the season is so easy to wear). There’s a standout leather mule that offers a summery update on the unstoppable cowboy-boot trend, and of course, a leather studded belt that’ll finish every single look off with a folksy full stop.

Sienna Miller at Glastonbury, 2010

But the piece that’s bound to sell out first? It has to be the scene-stealing ruffled-trimmed maxi dress, which encapsulates everything we love about Miller’s personal style: it’s feminine without feeling frothy, louche yet sexy, and features just the right amount of drama to make it worthy of all those approaching summer weddings and balmy events.

M&S x Sienna Miller ruffle dress

Sienna Miller x Marks and Spencer is available in-store and online now.