Sienna Miller Just Wore the Dress Trend That'll Dominate the Next 6 Months

What we love most about Sienna Miller’s style is how unpredictable it is; you never know what she might choose to wear next. Unconcerned with maintaining a specific aesthetic, Miller dresses based on how she feels and what she’s drawn to. We may spot her wearing ripped jeans, Birkenstock Bostons and a puffer jacket on the school run one day, only for her to turn out looking polished in tailored trousers, a cashmere knit and heels for the same endeavour the very next day. Truly, it’s fascinating to watch.

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(Image credit: GETTY IMAGES)

Sienna Miller wore a blue cut-out dress to The Sandman premiere. 

Seeing as she’s had a slew of major projects come to fruition this year, we’ve been treated to more Miller sightings—and in turn, Miller outfits—than we have in a long while. Her latest ensemble continues to hold her sartorial bar high. Last night, she attended the premiere of the film The Sandman, held at BFI Southbank in London. Although she doesn’t star in it herself, she was there to support her ex Tom Sturridge for his role in the film, and naturally, she did so in style. 

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(Image credit: GETTY IMAGES)

The Self-Portrait dress features fluted sleeves and a midi hemline. 

For the occasion, Miller chose a knitted midi dress with an on-trend sweetheart neckline and bell sleeves from Self-Portrait, the brand editors and influencers wear regularly. Of course, the knitted-dress trend always comes into its own in autumn when we look to trade in our lightweight linens and other fabrications for something a little heavier. But true to form, Miller is one step ahead of the curve in her blue midi, which she paired with white sandals and a bag to match. I could also see this dress working with minimal slider sandals, should you want to give it a relaxed spin. 

As part of the brand’s new collection, you’ll be pleased to hear, Sienna Miller’s Self-Portrait knit dress remains in stock. Scroll down to see it and the black iteration. Then continue on to shop our edit of other knitted dresses you can start wearing now and keep wearing well into winter. 

Shop Sienna Miller's Self-Portrait Knit Dress

Shop the Knitted-Dress Trend 

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Maxine Eggenberger
Deputy Editor

Maxine Eggenberger is Who What Wear UK’s Deputy Editor and has over fourteen years of experience in fashion journalism. She been creating engaging and authoritative content for Who What Wear UK since 2018, covering runway reports, emerging trends, long-form features, talent interviews self-styled shopping stories and columns, including her edit of the best new-in buys. She ensures the highest editorial standards are met across the site, leads the editorial team in their search and keyword planning, works closely with the fashion and beauty team on strategy and continues to pen many of her own articles. Prior to Who What Wear UK, Maxine's contributed to publications including Grazia, InStyle Marie Claire, Elle and Look, amongst others.