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Livia Firth, a big cheerleader in the ethical fashion space, has challenged people to wear everything they own at least 30 times. So when you buy something, have it in your head that you will wear it a lot.

“I wear the same bit of my wardrobe again and again and again until it falls apart, and then, if I have an event or a party, I go to the back of the wardrobe and pull out an old dress that will hopefully still fit.

“Secondly, try to buy brands that are doing good in the world. And thirdly, avoid cheap impulse buys. Only buy things you really love. And then love them!”

—Supermodel, entrepreneur, and environmental advocate Lily Cole, speaking to Time Out London on how to shop for clothes responsibly.