Norma Kamali

Norma Kamali's 1980-81 "Sweats" collection is a genuinely odd origin story for a fashion line: she took grey cotton-fleece sweatshirt fabric, previously understood strictly as gym-locker material with zero eveningwear pretensions, and cut it into skirts, dresses, and voluminous tops sold at real fashion prices in real fashion stores. The gamble worked because she treated the fabric's actual properties - soft, warm, forgiving, with real body-skimming drape once cut generously - as a design opportunity rather than a limitation to disguise, which is a genuinely different instinct from most of the era's eveningwear logic running in the opposite direction toward structure and shine.

That same instinct for taking activewear seriously as real fashion runs straight through her most recognizable single garment, the off-the-shoulder sweatshirt, popularized on-screen by Flashdance in 1983 - a plain sweatshirt with the neckline simply cut wider and slid down one shoulder, turning a genuinely utilitarian garment into something read as casually, almost accidentally sexy. She was working in stretch fabrics generally well before most of the ready-to-wear industry took them seriously outside of swimwear and dancewear, which put her a step ahead of the aerobics silhouette's full arrival as a mainstream street look a couple of years later.

I think Kamali's real contribution to this decade is less any single garment and more a permission structure she helped establish: that clothing genuinely built for movement and comfort - fabric that stretches, drapes without stiff structure, doesn't require an undergarment doing separate work underneath it - could be styled and marketed as desirable rather than merely practical. Jane Fonda's workout empire gave that idea a mass audience a couple of years later, but Kamali had already made the fashion-world case for taking sweat-fabric seriously before the exercise boom made it a cultural inevitability.