H&M sale: blue crêpe "blue lagoon" dress is the summer hit

H&M's ongoing sale features a bestselling crêpe dress in a "blue lagoon" shade inspired by the Aegean Sea. The colour fits the Mediterranean chic and quiet luxury trends, with cool blues and turquoises among the most fashionable hues for summer 2026. The dress is noted for its simple, elegant summer cut and is selling out quickly.