If people want to change, they will. If they don't want to, it's hard to make them do so. The current interest in the environment is a good thing. The best way to make a contribution in fashion is to promote the idea that a fundamental interest in preserving the environment is itself fashionable.

When I was younger, I never laughed. I was always sour. If I look at pictures of me from the past, I never see a smile. I think it came out of my insecurity. I had a lot of complexes.

The stars I have worked with not only look good in my clothes, but they also embody a spirit of dedication and hard work that I relate to and admire.

There are always protests, whether you do something good or bad. Even if you do something beneficial, people say you do it because it's advertising.

Sports will always be important in global culture, and so fashion, as a reflection of cultural trends, will always incorporate influences from sports.

Retailing has become fiercely competitive. Today there are many large global fashion companies who have opened up mono-brand stores in major cities around the world. When I first opened my boutique in New York, in 1985, there were almost no other European luxury brands present with their own stores. Now Fifth Avenue is packed with huge stores from major Italian and French labels.

I love things that age well - things that don't date, that stand the test of time and that become living examples of the absolute best.