Emma Watson Will Wear Her Sustainable Met Gala Gown Again

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Emma Watson

It's just a matter of when and where.

Emma Watson is starting a new red-carpet trend — one that is sustainable.

After Monday's Met Gala at New York's Metropolitan Museum of Art, the actress-turned-activist took to her Facebook page to explain that her Calvin Klein ensemble, designed in collaboration with Eco Age, was fashioned with the environment in mind.

"The body of the gown is crafted from three different fabrics, all woven from yarns made from recycled plastic bottles (!). Plastic is one of the biggest pollutants on the planet," she wrote. "Being able to repurpose this waste and incorporate it into my gown for the ‪#‎MetGala proves the power that creativity, technology and fashion can have by working together."

Watson continued: "It is my intention to repurpose elements of the gown for future use. The trousers can be worn on their own, as can the bustier, the train can be used for a future red carpet look … I’m looking forward to experimenting with this. Truly beautiful things should be worn again and again and again." Her post can be read in full here.

In an interview with Derek Blasberg for CNN, the HeForShe founder revealed that she made a decision last year that she would only wear sustainable fashion on the red carpet.

"It's not enough for me anymore that it's a beautiful item, I want to know that it's not leaving a negative mark," Watson told Blasberg, who noted that Watson's turning point started after she traveled to Bangladesh at age 19 and witnessed a factory worker of the same age having a very different quality of life.

It's no wonder her stylist, Sarah Slutsky, has taken to Instagram after each red-carpet appearance since to share the story behind Watson's looks, including the eco-friendly, five-piece design from fashion's big night.