Great style means having a point of view, but evolving your look is even more important. Rushing to embrace every trend will leave you fashionable, but not stylish

American women often fall into the trap of, "Oh, these are my weekend clothes. These are my work clothes. This is what I wear at night." It's so old-fashioned. The French are not afraid of their luxury. Americans can be so puritanical and think, "That's my special-occasion bag." Whereas, for a French woman, it's her everyday bag.

North Americans as a whole need to embrace having clothes altered to their body. I hear it all the time: why do the Europeans always look so good? They have a relationship with their tailor and spend the time and money to make their clothes look their best.

Seventy per cent of the clothes you own should be meat and potatoes. Thirty per cent should be icing and fluff - that's colour, pattern, shine, accessories. Too many women get the proportions the other way round, then can't figure out why they can't get dressed.

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.

You need to be curious one way or another as a designer. Your eye has to stay curious. I look at people and think about how they live. I think about bodies.

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.