In the 1970s, Mr. Cavalli designed jackets, jeans and minidresses made from patchwork denim, selling his upscale hippie frocks in a boutique in St. Tropez, on the French Riviera, to actresses like Brigitte Bardot and Sophia Loren. For the next two decades, he remained largely unknown outside Europe. Then, in the 1990s, he reinvented luxury denim, first with the sandblasted look and then, in a stroke of invention, by putting Lycra in jeans to make them fit snugger and sexier. When the model Naomi Campbell wore a pair during a runway show in 1993, stretch jeans became a huge trend.
