I don't use specific brands really. It's just that for my skin, I need as high an SPF factor as I can get my hands on. That's the only rule.

I am a fashion designer. I'm not an environmentalist. When I get up in the morning, number one I'm a mother and a wife, and number two I design clothes. So the main thing I need to do is create, hopefully, exquisitely beautiful, desirable objects for my customer.

As a designer I like to work with fabrics that don't bleed. That's why I avoid all animal skins.

When you think of fashion photography, it's a dream. It's like we all want to be those women. We want to wear those dresses.

I think the moment that I'm very proud of is building a business without using animals. And, hopefully, changing people's perception of how you can do luxury fashion.

Running is a huge category for us. To be able to run to work and have lightweight, breathable, windproof materials you can chuck in your bag that work on technical level but also on a lifestyle level are really important to me. I work out - and I think most people do - and I want to encourage women and inspire them in a way that fits in with their lifestyle.

Everyone can do simple things to make a difference, and every little bit really does count.