The clothes we wear send a message about how the world perceives us.

My role as the chair of the fashion department at Parsons put me face to face with all the big designers, retailers, and editors. Since I was moving in these new circles regularly, I realized I needed to do something about my own personal style. It was really Diane von Furstenberg who gave me the nudge.

Most people wear clothing that is too big or too small for them. And "oversized" is the downfall for most of us. We have to be careful that we don't look like we're slipcovered!

Men: don't wear the untucked shirttail. It cuts you in half, which is a very bad proportion. Think of yourself as a series of thirds. So when the shirt is tucked in, you're 1/3 on top, 2/3 on the bottom.

I'm constantly correcting young people and fashion students in this nation when they say "Well, I do couture." By definition, you don't. You have to be licensed by the government of France to do couture. So don't use that term. You can say that you do one-of-a-kind, you can say it's custom, but you can't say it's couture - because it's inaccurate.

The color, the shape, and the texture--none of it is accidental. Every item we wear has a glorious (or sometimes not so glorious) history, and that history extends back years--centuries, even--before Oscar de la Renta's 2002 collection.

I believe that it's very important to get to know people with whom you can have a substantive dialogue about design and its development. In addition, read everything about fashion that you can get your hands on. A palpable point of view is what makes a designer, so you need to be confident about yours.