After months of defaulting to swishy skirts and lightweight cotton dresses, September’s means it’s officially time to welcome jeans back into the heart of our rotations. But after a warmer-than-usual summer, when denim has barely had a look in, the jeans silhouettes worth knowing have begun to shift. For autumn 2026, I’m calling it: balloon jeans are set to be at the heart of every fashion person’s rotation.

Building on the balloon-trouser trend that’s seen voluminous silhouettes feature in some of the season’s chicest outfits, it makes perfect sense that the shape has now been translated into one of our favourite autumn fabrics. Designed to sit neatly at the waist and hips before flaring out through the leg and tapering back in towards the ankle, balloon jeans have a subtly sculptural finish that makes them feel far more directional than your average straight-leg or baggy pair.

Already making their way into the wardrobes of some of the best-dressed, Jessica Alba was spotted in a sleek dark-wash pair this week. She styled hers with a lace-trim tank top and elegant strappy heels, creating an elevated look that felt decidedly new-season.