When it comes to style staples she's all about a classic, wear-it-everywhere jacket.
"Whether it's a classic trench, a BLK DNM leather jacket, a great oversize J Brand denim jacket or a beautiful Miu Miu opera coat, I love that they always look and feel better the more you wear them," she tells the magazine.
While Watson may make endless 'best dressed' lists for her stunning designer ensembles (minimal, chic colour blocking is her thing), it's also good to know she's a high street girl at heart.
"I love shops with a unique point of view. In London, I buy my lingerie from Tallulah. I do my vintage shopping in Notting Hill. English Topshop is hard to beat."
But her favourite shopping haunts extend beyond the UK.
"In Paris, I will always go to Isabel Marant," she says. "In New York, there is a great shop called Otte, and another called Bird. In California, there is this great boutique called Anaïse where I stock up on beautiful handcrafted hair accessories. Net-a-Porter or Shopbop are great for online."
As for accessories?
"Every day I wear a tiny, drop diamond necklace on a sweet gold chain from Catbird, a very special Jennifer Meyer gold bar necklace that was a birthday present, and my tiny rings from Hirotaka, Boucheron, and one vintage one from my mother."
Watson's style icons speak for themselves too - Lauren Bacall, Sofia Coppola, Cate Blanchett, Françoise Hardy are a few of the leading ladies she looks to for inspiration.
LOVE THIS ACTRESS? Click through this style file to see more styled-to-within an inch outfits. She's already come into her own on the fashion front.
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