What’s a hot trend in high-end fashion? Getting shoppers to pay just as much for used clothes as they do for new ones.

Many designers are putting luxury spins on second-hand clothing, repurposing them under the mantle of sustainability to appeal to socially conscious customers. Their pitch: Getting a handle on the waste generated by an industry that doubled its clothing production between 2000 and 2014, according to McKinsey & Company.

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