Shelley appeared in many ads during her tenure as Supermodel in the 1970s. In 1971, she appeared on the pages of Vogue, in an ad for I.Magnin, a California-based high fashion and specialty goods luxury department store with branches across the US. In the ad with the tagline "The Liberated Line," she modeled a printed "joy-of-spring" shirtdress by Jean Louis. Jean Louis Berthault was an Academy Award winning French-American costume designer who designed clothes for almost every star in Hollywood including Marlene Dietrich, Joan Crawford, Marilyn Monroe and Vivien Leigh. The Duchess of Windsor also became a famous client of his, as well as First Lady Nancy Reagan. Shelley wore a printed, long-sleeved daydress that closed in front, had a fitted bodice, a full knee-length skirt, a contrasting collar, and cuffs with button details. Square-heeled pumps and a matching wide brimmed hat finished her look. And Shelley definitely was in vogue.