Emma Watson knows the power of fashion. The 26-year-old actress is wearing only eco-friendly clothing during her press tour for Beauty and the Beast to raise awareness for conservation. But Watson began the trend during filming by refusing to wear a corset. Now, her costume designer is speaking about about exactly why they chose to forgo the traditional clothing piece, and how they came up with the design for Belle’s overall look.

Tonight was a special screening of @beautyandthebeast in London. The film was shown at the Odeon Leicester Square cinema to 1,600 people after a reception at the stunning Spencer House 🌹 Bespoke @emiliawickstead structural, off-the-shoulder gown with inverted pleat train. The gown is made from end-of-line fabric sourced from a family-run, London business specialising in couture fabrics, and produced in Italy. These unwanted fabric pieces have been given a new lease of life; often irregular quantities of surplus or end-of-line fabrics cannot be sold and are destroyed. This piece was created in Emilia Wickstead's London atelier, by an all-female team. Earrings are from @catbirdnyc, whose pieces are handmade in Brooklyn. Dress validated by @ecoage #ecoloves Skin prepped with @demamielskin Dewy Facial Mist, @tataharper Repairative Moisturiser and @decleoruk Aromessence Neroli Hydrating Oil Serum. De Mamiel mist is made from ingredients sourced and blended in the UK, in small batches to maintain the vitality of each natural ingredient. Tata Harper are verified by PETA that neither the brand nor its ingredient suppliers conduct, commission, or pay for any tests on animals for ingredients, formulations, or finished products. Decléor serum is a blend of naturally derived ingredients such as neroli and sandalwood and free from mineral oils and parabens. Foundation is @inikaorganic's BB Cream, which is certified organic, vegan and not tested on animals. Concealer is the @rmsbeauty "Un" Cover-Up made from organic coconut, jojoba and cacao oil and mineral colours. Cheeks are @iliabeauty A Fine Romance Multi-Stick which is gluten-free and then finished with Inika's Mineral Mattifying Powder, blended from silica, corn, tapioca and rice powders instead of talc, which face powders have traditionally been based on. Beauty brands verified by @contentbeauty

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Watson has expressed that what drew her to Belle’s character, after turning down the role of Cinderella, was Belle’s ability to be “curious, compassionate, and open-minded” — traits that Watson and costume designer Jacqueline Durran used Belle’s wardrobe in the movie to convey. And modern Belle would not have the “corseted, impossible idea of female beauty,” Durran told Women’s Wear Daily.

Everything about Belle’s look served a purpose and helped her live her life more freely. “She doesn’t wear ballet pumps, she wears boots. She has her 18th-century pockets, but she has them on the outside of her costume so that you can see they’re like a tool belt. They’ve got useful things in them that she’ll need for doing the different things she does in the village. She tucks her skirt up into her waistband so you can see her bloomers, and she wears bloomers so that she can not be trapped by the skirt.”

“Nothing she wears is inhibiting,” the costume designer said. “She can do whatever she would want to do in any of her costumes. She rides a horse.” Durran even created a few outfits that celebrate Watson’s eco-friendly initiatives, including an eco-sustainable and organic red cape with a white edge that was printed with leftover blocks from the movie set.

Who has plans to go see Beauty and the Beast opening weekend? Tell us @BritandCo!

(h/t Refinery29; photo via Jamie McCarthy/Getty)