Jessie Buckley’s simple outfit formula of barrel leg jeans and a cardigan is the way we're restyling denim for spring

Jessie Buckley’s red carpet gowns have made her a certified fashion icon, as well as an award-winning actress. But her casual style is just as chic and, when she stepped out at the Hamnet photography exhibition at the Tristan Hoare Gallery in December last year, she wore a simple outfit of jeans and a cardigan that we’re going to be recreating as our go-to spring outfit formula this year.

Wearing Proenza Schouler’s Rocio cardigan in cashmere and the Fontana jean by Proenza Schouler, her dark wash denim beautifully contrasted the rich teal of her knitwear. A slightly cropped hemline, fitted waist and sophisticated collar made the cardigan feel contemporary, while also showcasing how to style barrel leg jeans with a fresh feel.

A pair of sleek black boots finished off the look, with their low block heel and timeless silhouette creating a streamlined shape against the baggy fit of her jeans. Her choice to go without jewellery reinforced the off-duty feel that was as elegant as it was effortless.

Recreate Jessie Buckley's Spring Outfit Formula

Dark wash denims have been dominating jean trends, alongside baggier, wide-leg styles. Jessie’s barrel leg pair plays perfectly into this aesthetic, with the popular silhouette easily elevating casual wear when paired with sophisticated pieces like her cardigan and boots.

To make her look even more on-trend for spring, the blue hue of her cardigan is making waves in the spring/summer fashion colour trends for 2026. Cerulean blue in particular found itself all over this season’s runways, with the shade being best paired with dark denim like Jessie’s, navy and soft blue/greys, as well as earthy neutrals such as tans, browns and soft gold.