I have long been an admirer of Sienna Miller's effortless style, and it seems that this won't be changing any time soon. After a whirlwind trip to Cannes Film Festival where the actor stole our attention in a boho-inspired Chloé gown, she's once again become a talking point in the Who What Wear UK office, this time for her elevated take on off-duty style.
Stepping out in London this week, Miller crafted a polished ensemble that's just become my template for easy weekday elegance. To contrast the formal feel of a grey blazer, she styled it with the sleeves casually scrunched up to her elbow, showing some skin and relaxing the smart piece. Leaning further towards the casual side, she selected a pair of billowing horseshoe jeans to add volume to her look, along with a slouchy suede bag from Jimmy Choo to accessorise.
Finessing her outfit with some polished additions, Miller layered on two gold chain necklaces and selected a smart pair of pointed-toe boots to add an angular element to the slouchy shape of her jeans and bag. Inspired by Miller's styling choices, I'm eager to emulate this look at home, and luckily for me, my wardrobe already contains all of the staple items that make up the chic, celebrity-approved outfit.
To re-create Miller's look, style a blazer over your favourite wide-leg jeans and reach for a well-loved slouchy bag to finish it off. If, however, you're in the market for some fresh wardrobe additions, read on to discover the actor's style below, and see our edit of the best wide-leg and horseshoe jeans to shop this season.
SHOP SIENNA MILLER'S LOOK:
Miller has just bumped this slouchy tote to the top of my wish list.
Style over a white tee or wear with a square-neck vest à la Sienna.
This casual vest is ideal for summer layering.
These also come in three other washes.
I'll be wearing these with baggy jeans.
SHOP OUR FAVOURITE WIDE-LEG AND HORSESHOE JEANS:
These comfortable jeans also come in four other shades.
Arket's Cloud jeans have become cult at this point.
These come in UK sizes 4-22.
Alaïa's barrel-leg jeans are a fashion person's favourites.
Dark-wash denim looks so good with white, cream and red.
These are extra-long, if that's your thing.
I always come back to Reformation for its elevated basics.
Style with pointed-toe kitten heels to add a polished effect.
-
Meghan Markle Traded Her Usual Black Skinny Jeans for a Denim Trend That's About to Be EverywhereAnd you can too.
-
I'm High-Key Obsessed—Nordstrom Has the Best Basics, and They're on SaleTop-tier basics ahead.
-
Kendall Jenner Landed in Paris and Ditched Black Blazers for These Stylish AlternativesUpgrade.
-
My Sister Asked Me What Jeans She Should Buy This Season—I Recommended These 7 PairsSilhouettes that feel very 2025.
-
7 Major 2025 Denim Trends for Under $150The styles and silhouettes to have on your radar.
-
This Dated Denim Trend Is on Its Way Back—Here's How French Women Are Already Wearing ItFive outfit combos we're copying.
-
Trust Me—This Is the Most Elevated Denim Style There IsI found the perfect pair.
-
Nicole Kidman's Non-Skinny, Non-Baggy Jeans Are the Ideal Airport Denim TrendNo need to pack any other pairs.
