Sketch of a woman wearing a long sleeved top with mandarin collar and button placket, over a knee length skirt with patch pockets--she has a coat over her arm. The other woman sports a blouson top with long-sleeves gathered at the cost, with pants. This is a cut-out of the advertisement, and the copy reads, For spring, Bonnie Cashin turns to zephyr-wool knits to tailor into tops, skirts and pants, always punctuated with bands and stripings of leather or suede, her own signature..these in dove white or pheasant blue. Bonnie Cashin (September 28, ca. 1908� February 3, 2000) was an American designer and is considered one of the pioneering designers of American sportswear. She created practical, uncomplicated clothing that catered to the independent woman of the post-war era. . Cashin is often cited creating both the concept of layering clothing and for coining the term. The idea of layering came from time she spent in Asia. Her use of leather, mohair and hardware was pioneering and the brass turnlocks that kept the top of her 1940s convertible down became a signature feature of Coach handbags.