Forget wax jackets: Sienna Miller’s corduroy Barbour trench coat is the only jacket you need this season

Look no further for autumn outerwear inspiration

Sienna Miller wearing Barbour trench coat at London Fashion Week on 17 September, 2026
(Image credit: Christian Vierig/Getty Images)

Since she starred in Barbour’s latest autumn campaign, we’ve been waiting to see Sienna Miller in some of the brand’s new pieces. Of course, she did not disappoint when she was spotted at the British clothing brand's London Fashion Week event in the Antonella cord trench coat,

The rich corduroy fabric balances country-inspired design with city-ready flair, and the warm camel shade will work with any autumn outfit ideas. Both the colour and its texture bring a softer feel to the classic trench silhouette and, though Sienna proves that cord is a standout finish for the season, her style is just as easy to emulate with other textured materials like suede.

With a simple, all-black outfit underneath her coat, it was Sienna’s Caly leather knee-high boots by Jimmy Choo that really caught the eye. They felt perfectly placed alongside her long coat to create a striking, autumnal look. Classic, but certainly not boring, this is autumn dressing at its best.

Sienna Miller wearing Barbour trench coat at London Fashion Week on 17 September, 2026

(Image credit: Christian Vierig/Getty Images)

Recreate Sienna's style

When it comes to the best trench coats, Sienna's is the chicest we’ve seen this season. A long coat can almost work as an entire outfit in itself, so choosing a luxe, statement piece can make light work of dressing for autumn.

Like Sienna, you can style your coat over a simple outfit and let a pair of knee-high boots do most of the talking, or you can bring a heritage flair to any casual look by throwing it over your most comfortable jeans.

Plus, one of our favourite reasons to love this coat is just how timeless it is. As with many Barbour pieces, a classic look has been refreshed for a new season without losing its timeless shape, which means this style won’t date.

Charlie Elizabeth Culverhouse
Freelance news writer

Charlie Elizabeth Culverhouse is a freelance royal news, entertainment and fashion writer. She began her journalism career after graduating from Nottingham Trent University with an MA in Magazine Journalism, receiving an NCTJ diploma, and earning a First Class BA (Hons) in Journalism at the British and Irish Modern Music Institute. She has also worked with Good To, BBC Good Food, The Independent, The Big Issue and The Metro.

You must confirm your public display name before commenting

Please logout and then login again, you will then be prompted to enter your display name.