When you try on something, you have to ask yourself, 'How many ways could I wear this? Could I wear it to work? To dinner or drinks? Will it span the seasons' If you have to think too hard about those questions, then skip it.

The greenest thing you could do in fashion, is to buy something great that you’re going to use for years

I hate the idea that you have to give up anything. I think you can be powerful and still be provocative, you can be smart and have a softness, you can have all of it.

I love fashion because it's plugged into the zeitgeist, so it's always changing. Thirty years ago, I could never have predicted I'd be where I am today, so I know I don't know what's going to happen in the next five years or the next 20 years. I have my predictions—I'm sure technology will continue to have an impact on fashion, particularly the way people shop. I think quality will be increasingly important—we're moving away from a time of fast fashion. But really, the only constant in fashion is that you must keep moving forward, otherwise you'll be left behind.

Every woman should own a shirtdress

Learn to invest in the best quality you can afford and wear pieces in different ways.

Women are much more comfortable making their own style rules now. They want pieces that will make their busy lives easier.