In her roomy blazers, collared shirts, wide-leg trousers, and loafers, American actress Katharine Hepburn’s men’s-wear style is almost as storied as her 12 Oscar nominations, 4 of which resulted in a best-actress Academy Award. Unlike her contemporaries, Hepburn avoided the feminine wares of gowns and heels in favor of a more casual way of living, thus pioneering modern-day American sportswear. One look at the runway or the red carpet, and we see designers, from Ralph Lauren to Michael Kors, and stars like Angelina Jolie and Emma Stone pay homage to the fierce leading lady—who would have been 107 today—on a regular basis. Happy Birthday, Katharine Hepburn.