Emma Watson's Met Gala dress was made from plastic bottles for the Green Carpet Challenge

The actress collaborated with Calvin Klein and Eco Age on her Met Gala red carpet look

Emma Watson's Met Gala gown was made from recycled plastic bottles – New York Daily News

Met Gala 2016: Emma Watson wears a Calvin Klein dress made from recycled plastic bottles

Emma Watson's Met Gala dress was made from plastic bottles for the Green Carpet Challenge

Emma Watson's Met Gala gown was made from recycled plastic bottles – New York Daily News

Emma Watson's Met Gala gown was made from recycled plastic bottles – New York Daily News

The Green Carpet Challenge at the Met Ball - A History - Eco-Age

Emma Watson and Michelle Monaghan wore recycled bottles and cans to the Met Ball - Vogue Australia

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Emma Watson's Met Gala gown was made from recycled plastic bottles – New York Daily News

Emma Watson Takes Green Carpet Challenge at Met Gala 2016, 2016 Met Gala, Emma Watson, Met Gala

Good witch Emma Watson's Met Gala look was made out of plastic bottles