The classic button-up shirt needs no introduction, but this remixed version does: meet the Alena Blouse, a close relative of the closet staple with one important update on the sleeve. It's all about the ruching detail here, and all about keeping the old as we experiment with the new. Pair it with denim (duh) or trousers, if you're feeling fancy.

• Crisp lightweight blouse
• Ruched sleeves
• Blue and white stripes