I'm not 100% nice all the time, so I find it quite hard to be really pleasant.

On the same Australian trip, I brought back a pair [of Ugg] for my then boyfriend who was a photographer. He wore them all the time. He used to wear them with Levis twisted jeans and a vintage T-shirt. This is 2002. They looked great on him. I guess it takes a certain kind of man to pull them off but they have other ones that are less typical of this, I think.

London Fashion Week is so different from any of the others. Compared to the strictness in New York, London seems freer from commercial constraints. Truer to the process, to street style, to a sense of humour.

I think because I do model for brands but it's never without input, ever. With AG I front their campaign, and obviously designed the collection for them. I did the same back in the day with Madewell. Even with Longchamp, there's a certain amount of collaboration on deciding on photographers and stuff like that. It's something that I'm accustomed to doing behind the scenes.

My mother isn't particularly vain. Growing up with a parent who put emphasis on personality over looks was important.

Looking effortless takes a lot of effort. When I get new Converse I dedicate some time at home to shoving mud on them so they don't look squeaky clean.

I mean, props to Paris Hilton because she's doing it really well and for someone that's such a wealthy heiress she doesn't really have to lift a finger at all. She was the first example of really strong branding and is obviously a very clever businesswoman. I remember recently they printed in a British magazine, they compared her to Kim Kardashian in the sales of perfume and all of this other stuff. She still makes huge revenue from all of her different business endeavors.