Sienna Miller Rocks the Perfect Fall Boho Look in ’70s Flared Jeans

Sienna Miller’s boho outfit formula is so easy to replicate this fall. All you need is flared jeans and a silk blouse.

Sienna Miller has become a boho style icon. This beloved aesthetic has always been part of her style, whether she’s strolling down the street or hitting the most prestigious red carpets. Her looks are characterized by a natural, relaxed elegance, featuring flowing dresses, lightweight fabrics, and details reminiscent of 1970s fashion. And her latest red carpet outfit only confirmed this.

Sienna Miller attends the premiere of Abigail’s Party at The Harold Pinter Theatre on August 19, 2026 in London, England.

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All the details of Sienna Miller’s ’70s boho look:

For the presentation of Abigail’s Party in the West End, Sienna Miller opted for a sophisticated yet effortless outfit, in perfect 1970s style. The star paired an ivory silk shirt with a pair of cropped flared jeans. A Chloé bracelet bag, glove-style ballet flats, and large sunglasses completed the look.

Sienna Miller attends the premiere of Abigail’s Party at The Harold Pinter Theatre on August 19, 2026 in London, England.

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