Castelnau's fame is linked to the fashion industry, where he is known for designing easy, comfortable clothes, the kind that quickly become favorites in a woman's closet. "I designed when I was a kid, I didn't plan to make a profession of it. I wanted to be in the movies." In 1990 his company recorded a 70 percent increase in sales. With stores on Madison Avenue, Los Angeles and one in San Francisco. Though Castelnau has worked in every aspect of the business, he prefers designing, with not a certain woman in mind, it's the affluent woman who buys his clothes. His clothes fit into age categories, why they appeal to women such as Christie Brinkley, Jackie Onassis and Princess Stephanie of Monaco.