Though she's definitely set a new international standard through her personal style, Yasmin Sewell has killed it in many more was than twisting that perfectly messy bob and mastering outfit-making. Aside from balancing multiple creative director titles (of her own brand, Être Cécile, and of creative agency and showroom Paper Mache Tiger), Sewell helped launch brands like Christopher Kane, Thomas Tait, and J.W. Anderson's womenswear line. Her keen eye for what's next in fashion has propelled designers to stardom. Now, she's taking that eye to a fashion institution, designing a 12-piece capsule collection for Barneys New York.

Together, the pieces — which range from a basic printed button-down to an aqua-blue alpaca-wool coat — form a strong, simple wardrobe worthy of photographers' snaps (not surprising, considering Sewell is a regular on Fashion Week street-style slideshows). The Australian-born, London-based mogul's off-duty style has garnered almost as much attention and praise as her behind-the-scenes work. The two come together in her collaboration with Barneys: her professional background gave her an understanding of what sells, her sartorial intuition a sense of what works. The three main focus points of the collection were durability ("Each piece had to be the kind of item you know you'll want to hang on to forever," she told British Vogue), wearability, and sophistication. Sewell then played with fabric and color to create standout pieces, sure to attract Bill Cunningham's lens.

The items start at $295 and cap off at $1,495, and are available for pre-order on the Barneys website. While landing on the higher end of shoppable fall fashion, Sewell's capsule collection sets some ground rules for cold-weather styling we can all follow next season. First, the name of the game is comfort. Sewell has a penchant for menswear, which translates to boxy, oversized silhouettes just fitted enough so you're not swimming in them. "I’m always comfortable in man-style clothes: mannish blazers, boyfriend jeans, or wide-leg trousers," she told British Vogue. The trousers are tailored, the tops cropped, the buttons done up all the way. It also reminds us that cocoon coats will have a moment this fall, so if you're looking to invest, go big. Check out the 12-piece collection ahead and start getting excited for the cold.