In 1978, Calvin Klein introduced a line of “designer” jeans. Based on the “European” style, they were high-waisted and tight. They featured a distinctive stitch pattern on the back pockets and a “Calvin Klein” label that branded the jeans as a status symbol. Klein became known for his overtly sexual advertising campaigns — most famously, those featuring fifteen-year-old Brooke Shields. When asked about his marketing approach, Klein declared, “Jeans are sex.”