Sienna Miller Just Wore 3 Key Autumn Trends That Instantly Update Basic Jeans

By Swedan MargenSeptember 2, 2025

I look at jeans the same way I do a simple black tank top or a crisp white tee: a "blank canvas" piece that will absorb the energy of the rest of your looks—laying a chic foundation, but never dictating the vibe an outfit. You can reach for them every day and still walk out the door in a completely different look each time.

What really shifts the energy of denim are the supporting acts—your shoes, layers and accessories. Just take Sienna Miller’s latest outfit as proof.

Starting with a classic pair of straight-leg blue jeans, Miller added character by cuffing the hems—just enough to stop them grazing the floor and, more importantly, to give her shoes a moment. Her footwear of choice? A pair of fur-lined suede clogs from Miu Miu (£780). With their ‘70s spirit and bohemian ease, clogs are having a significant revival—resurfacing on the runways at Chloé and Miu Miu and now trickling into everyday wardrobes. Miller’s flat-footed pair felt unfussy and comfortable, but also perfectly timed for an autumn 2025 debut.

Sienna Miller wears blue jeans, cuffed at the ankle with Miu Miu clogs, a brown jacket and a Gucci bag.

To build on this base, Miller layered in thoughtful details that elevated the look without making it feel “too trendy.” Her jacket was a prime example: a boxy, collared cut in a rich shade of chocolate brown. Steering away from standard black or navy, this warm hue not only feels fresh for the season but also adds depth and polish to even the simplest jeans-and-top combo.

And of course, there was her bag. Miller carried a Gucci Giglio Bag (£1600), fresh off the brand’s Cruise 2026 runway in Florence. With its monogram print, signature red-and-green web trim and easy canvas finish, the roomy style is already tipped to become autumn’s “It” bag. Naturally, Miller was among the first to put it to work.

Suddenly, with a few simple styling choices, Miller's outfit felt relaxed and comfortable, but also thoroughly on trend. Inspiring me to keep my jeans close to hand and invest in the odd wardrobe upgrade, read on to shop my edit of the best jeans, clogs and brown jackets below.