3 Must-Have Spring–Summer 2026 Trends

At the start of every season, we decode the trends to save you time and help you build a wardrobe that is cohesive and genuinely desirable. Here’s what stood out to us from SS26 - and, most importantly, the pieces we selected for you at 100% Sisters.

Trend 1: Pure White

Not off-white, not cream - pure, luminous white. This season, we’re embracing it as a total look: an Aymone white shirt worn with white Soeur trousers and a pair of suede sandals. The effect is striking.

The secret to a successful all-white outfit? Playing with textures. Crinkled cotton paired with matte satin, or crisp poplin combined with airy chiffon. It’s this contrast of fabrics that gives the look its full dimension.

Trend 2: Reinvented Denim

Denim never truly disappeared, but this season it returns in its boldest forms: ultra-wide-leg cuts, raw untreated denim, and above all, denim paired with noble fabrics such as silk, linen, and leather.

We especially love the combination of wide-leg jeans with a silk shirt tucked in, finished with a slim leather belt to define the waist. It’s the kind of look that says, “I didn’t try too hard,” while clearly being carefully considered.

Trend 3: The Structured Bag as the Centerpiece

This season, the bag is no longer an accessory - it’s the focal point of the outfit. Shapes are rigid, geometric, almost sculptural. Think a boxy clutch carried by hand, or a trapeze mini bag with a short handle.

The idea: build a neutral look around it, allowing the bag to become the sole touch of personality. An all-grey or beige outfit paired with a colourful bag instantly sets the tone.