Considered a pioneer in the design of American sportswear, she created innovative, uncomplicated clothing that catered to the modern, independent woman beginning in the post-war era through to her retirement from the fashion world in 1985.
The family lived in several towns in northern California during Cashin's early years, and in each, her mother would open a custom dress shop.
[4] During high school, Cashin was hired by a Los Angeles ballet and theatrical revue company, Fanchon and Marco, to help make costumes for its productions.
"[5][2] In 1937, at the urging of Harper's Bazaar editor Carmel Snow, sportswear manufacturer Louis Adler offered her a job.
I felt more at home with dancers, actors, artists, musicians, writers--people like that--than I did with most of the business men I met in the clothing industry.
After producer William Perlberg recruited her, Cashin joined 20th Century Fox and created clothes for about sixty films including Laura (1944), Anna and the King of Siam (1946), A Tree Grows in Brooklyn (1945), and Junior Miss (1945).
[1] In 1962, Cashin was hired by Miles and Lillian Cahn as the first designer for Coach, a newly-formed women's accessory business.
[13][2] In 1972, Cashin founded The Knittery, which produced limited edition collections of coats and handmade Scottish sweaters.
[11] In the early 1940s after she had moved back to California, Cashin was married briefly to Disney illustrator and art director Robert Sterner.
Inspired by the brass turnlocks that secured the top of her 1940s convertible, the hardware became a signature feature of all of her designs, including her Coach handbags.
[9] Cashin was famous for her witty and ingenious approaches to designing for mobility, including a dog leash skirt: a long wool skirt that could be instantly shortened for walking up stairs by latching a small brass ring sewn at the bottom to a small brass clasp sewn into the waistline.
In a February 2000 interview with National Public Radio, Cashin explained the origin of the skirt: "My studio, out in the country, in Briarcliff, in the old carriage house, had steps that went up to a second floor.