If you're hoping to add a dash of eco elegance to your holiday wardrobe, look no further than AllSisters, a Barcelona-based, sustainable swimwear brand. "They just do amazing, very classic, chic swimwear," Watson told Coveteur.
Prices start at £138 for a swimsuit and about £90 for a bikini. Visit allsisters.com.
Handmade in the heart of New York City, Catbird jewellery includes Kate Bosworth and Rashida Jones among its famous fanbase, while Watson was spotted in a pair of the brand's earrings on more than one occasion during her Beauty and the Beast press tour. The best news? It delivers worldwide. Visit catbirdnyc.com.
Simon Miller is a name to know in the world of accessories – and in the world of sustainability. As Watson's stylist Rebecca Corbin-Murray revealed, the brand uses organic mills to "reduce impact and conserve water", as well as incorporating ozone technology into its production. The small top-handled bucket bags are fast becoming something of a cult item: and it's not hard to see why. Visit net-a-porter.com/simonmiller.
Not only is Tome a sustainable brand, but it is a women-led, women-focused organisation that unsurprisingly appeals to Watson's feminist sensibilities. The cool NYC-based label was launched in 2013 and continues to deliver striking, intriguing collections, all with a conscious impact in mind. Visit tomenyc.com.
Ancient Greek Sandals
One of our go-to sandal brands is also one of Watson's preferred sustainable designers. Ancient Greek Sandals offers chemical-free, natural leather shoes handmade locally by skilled craftsman using traditional techniques. Its footwear is timeless and will take years to wear out. Visit ancient-greek-sandals.com.
Watson called Gabriela Hearst "absolutely amazing, really sustainable and very smart" – and has supported her from early on in her career (as shown by her wearing a camel coat by the brand, pictured). The designer is a favourite among celebrities and is a name to know for creating a conscious capsule wardrobe. Visit gabrielahearst.com
It's important to remember to be sustainable through and through, all the way down to your underwear. Watson has vouched for Copenhagen's lingerie company Woron in the past, and has even worn its bodysuits with jeans and skirts on multiple occasions. Visit woronstore.com.
One of Watson's edgiest red-carpet looks of recent times came courtesy of Kit Willow's brand Kitx. The house is built on a belief of ethical, sustainable fashion, but we can say with certainty that there is no compromise on style.
"I strongly believe in a better world, through the simple mantra of making women look and feel beautiful, without harming our planet, so everyone can win," Willow says on her website. Visit kitx.com.au.
If you would describe your wardrobe as minimalist, then you need to have Filippa K on your radar. The Scandinavian firm describes itself as "curious and conscious" and is committed to the four Rs – reducing, repairing, reusing and recycling.
Filippa K uses novel techniques from reusing garments customers no longer want to leasing the collections in store, rather than simply selling them. Watson has been spotted in one of its soft and simple sweaters. Visit filippa-k.com.
Further proof that sustainable fashion does not have to spell boring, Edun is one of the most fashion-forward brands of the moment, creating trend-led pieces including printed flares, deconstructed tops and bold dresses (like the one Watson is wearing here).
However, the whole movement is focused on sustainability and building long-term opportunities for African artists and artisans, giving it a Watson-approved conscious appeal. Visit edun.com.