While not being entirely sustainable, Theory is a label that is taking steps to reduce its environmental footprint. The Good Wool collection is the brand's environmentally responsible range, which is made from traceable Australian merino wool that has been woven using energy-saving technology.
Back in January 2018, Meghan wore a wool Theory jacket that put her shoulders on display. She paired it with a Stella McCartney coat and Hiut Denim jeans, making her outfit one of the most sustainable looks she has ever worn.