Sienna Miller Just Wore the Colour That Will Dominate 2025 with Winter’s Most Elegant Boot Trend

Having spent so many years at the epicentre of the British style scene, Sienna Miller is always an excellent temperature check for the trends set to ripple across London each season.
Though she always upholds her impeccable sense of style, Miller isn't afraid to approach a new-season trend. But instead of letting fresh-from-the-runway items dominate her outfits, the style icon blends new trends into her wardrobe almost inconspicuously—never letting them dominate her looks.
As such a strong force on the London street style scene, I'm always primed to pay attention when we're treated to a new outfit from Miller, and her most recent is one of the strongest I've seen in a while. Proving that her mind is already on spring/summer 2025, she stepped out in a neutral ensemble save for a few notable pops of colour. With her sleek Prada bag in a light-blue shade, Miller nodded to the fresh colour trend that will be taking over next year.
With an icy tone, the pale hue adds an understated twist that brings brightness to every ensemble. Cropping up across multiple S/S 25 runway collections including Paul Costelloe and Jil Sander, the shade is gearing up to dominate the next few months. Whilst Miller's baby-blue bag worked well with her sandy 'fit, it was her burgundy boot pairing that really made it sing.
Dominating shop fronts right now, the burgundy shoe trend is one of the season's heroes. Allowing us to move away from black whilst retaining a rich and moody colour payoff, burgundy footwear adds a warm wash of colour and an elegant point of interest to an outfit in a low-key but impactful way.
If, like me, you're eager to shop Miller's trending accessories, read on to discover our edit of the best baby-blue bags and burgundy boots.
SHOP OUR FAVOURITE BABY-BLUE BAGS AND BURGUNDY BOOTS:
I always come back to Paris Texas for its bold shoes and boots.
This can also be carried as a crossbody.
The burgundy colour trend is taking off this winter.
The kitten heel adds a little extra height without sacrificing comfort.
This also comes in five other shades.
This elegant top handle bag is perfect for evening styling.
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.
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