For us, every day is Earth Day. It's like with Women's Day recently, I said, "Every day is women's day - we're women!" It's something that we sort of take for granted.

It became very important for me to stand up and design with a conscience for environment, you know? Just because you like clothes doesn't mean that you have to throw your principles out the window.

When people wear our Bolivian knits and see who knitted them, they are excited because they know they are supporting this women's cause in Bolivia. And it shows you that we are all connected. It's not a machine making your clothes in a black hole somewhere. There is a human being behind it, and a community there.

I wanted to start something in New York that focused on making products locally, and because I'd just had my second child didn't want to be traveling halfway across the world anymore. The idea was to have something wearable that fit with my reality, which was being a mom with two young kids and not always wanting to wear jeans. I still wanted to wear interesting clothes, and the options out there I found were either very expensive or very cheap. There was a big gap in the middle.

We can't start with big thinking, we have to approach it little by little. Sustainability isn't going to become big right away. Each day you give yourself a little bit more responsibility. It's not ideal, but that's the only way things change, we can't just keep ignoring it.

It would be great if everybody got a conscience. If we started to take more responsibility for the pollution in the world caused by the fashion industry, and to produce less, but better-thought-out goods. Then it becomes worth saving up to buy something beautifully-designed because you can and will keep it, rather than buying a bunch of disposable fashion items you'll probably wear once before throwing away and adding to the waste stockpile. I do think people used to buy clothing with a more thoughtful approach.

If you feel good about your clothes, you get excited. And I want women to feel good when they're wearing my clothes - not just because they're beautiful, but because the process and every step involved in making them is incredibly thoughtful. You can be proud wearing them.