As Professor Lupin said, she is clearly the brightest witch of her age. Watson has resolved that all of her red carpet appearances incorporate sustainable fashion. In the case of the Met gala, this means that the majority of the fabric used in her gown was made from Newlife, a yarn made from 100 percent post-consumer plastic bottles; and the detailing on the bustier was made with organic silk and cotton. The gown is also made from separate components that can be mixed and matched so that they can be worn again, you know, like how we wear normal clothes. And it looks awesome, 10 points for Gryffindor!

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