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.

There's strength in numbers. One designer isn't going to change everything. Everyone has to demand that their materials are being sustainably sourced. Just like how cosmetic companies won't test on animals, there have to be benchmarks that we can all adopt.

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.

I always use a really simple analogy: if you're putting organic food on your table because you care about eating well, shouldn't you be trying to do the same with what you're putting on your body? Our skin is our biggest organ. Everyday you are absorbing things through it. The way that a cream without the right ingredients can affect you, everything you put on your skin matters.

I've always been very aware of environment. When I was a kid I wanted to be a marine biologist until I realized I hated being underwater. I think a lot of that came from traveling and seeing the levels of waste produced by so many factories around the world.

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.

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.