Shelley (who was represented by model agent Eileen Ford) began to modeling, part-time, during her summer breaks from school in the 1960s. Later, after graduating from Smith College, she signed on full-time at Ford Models Inc., and became one of the most in-demand models in the United States. She appeared on magazine and catalog covers and pages, on newspapers, on print and TV advertisements, and even on packaging covers. In the early 1970s, she appeared on the package cover for Linda Dresses, a German company that sold garments for fashion dolls. The package that Shelley appeared on was for dolls 29-30 cm in size. The pic of Shelley used on it was the same one used on a 1971 Hot Pants cologne ad (for more, check out: Hot Pants, 1971). And Shelley looked young, fresh and natural.