Miuccia Prada reworked some of the most outstanding concepts of her signature line into accessible looks for Miu Miu, her diffusion label. It was an eminently wearable, simple and refined collection, centered on sweet, girly dressespale-rose chiffon slips, some gathered or bunched--and the season's all-important essentialthe perfect jacket. Loose coats with rounded shoulders, ample shiny skirts and fitted tweed suits successfully acknowledged the '40s-inspired elegance present in much of the Fall collections. Pleated wool skirts were worn with casual striped tees, and optical-printed skirts and tops were playfully mixed and matched. Once again, Prada proved that diffusion lines can often compete with the best of the rest.