Sienna Miller Just Wore A Chic, High Street Coat—And It’s Still in Stock

It’s not often Sienna Miller steps out in something from the high street, but when she does, we take note. Spotted in London this week, the actor and perennial style muse wore a navy wool coat by British brand ALIGNE—a piece that perfectly captures her brand of laid-back refinement, and one that fashion editors have quietly championed for seasons. True to form, Sienna made it look every inch as elevated as her designer favourites.

Miller’s style has always struck that elusive balance between bohemian ease and refined polish. She never looks over-styled, yet every detail feels perfectly placed. This time, she paired the navy coat with straight-leg blue jeans (a capsule wardrobe signature), a white tank top and sleek black loafers. The result? An outfit that feels quintessentially Sienna—relaxed, refined and quietly confident.

A chic alternative to classic black, the navy version brings a touch of softness and depth to winter dressing. It offers that subtle point of difference that instantly makes even denim feel more elevated. With its oversized silhouette, double-breasted buttons and sharp tailoring, the coat looks—and feels—far more premium than its price tag suggests. Crafted from wool, it’s warm enough for the coldest days while remaining sleek and structured. For those who prefer a more neutral palette, the George coat is also available in black, grey and white.