I've Tried on Hundreds of Jumpers—Here are 9 Styles from COS, Reformation, and Sézane That I'm Recommending to My Friends…

      (Image credit: Who What Wear UK)

      My collection of knitwear is one of the most cherished aspects of my wardrobe. While some may dread the drop in temperatures, I actually look forward to reconnecting with my coziest pieces. The drawers dedicated to knitwear have been thoughtfully organized, featuring timeless styles devoid of fleeting trends—just dependable pieces that have served me well in winter for years. As a shopping editor, I’ve tried on countless jumpers (literally), and I can confidently vouch for three brands that consistently stand out: Reformation, Sézane, and COS.

      Florrie is wearing the Cove Cashmere Oversized Sweater from Reformation (Image credit: @florriealexander). What distinguishes exceptional knitwear from the average is the right blend of materials, cut, and color. These three elements ensure that the piece remains in your collection, adapts to changing trends, and reliably supports you through the chillier days. That doesn’t mean we only welcome simple neutrals; there's ample space for fun patterns and vibrant colors as long as they align with your personal style. As a self-declared minimalist, my winter capsule prominently features red accents and playful stripes.

      Florrie dons the Gaspard Cardigan from Sézane (Image credit: @florriealexander). This trio of knitwear brands has developed distinct aesthetics, but they share a commitment to high-quality materials and innovative interpretations of classic designs. With meticulous attention to detail, each brand boasts a range of best-sellers that return year after year, thanks to their lasting appeal and ongoing popularity. Today, I’m excited to highlight the nine top knitwear pieces from Reformation, Sézane, and COS.

      Shop the Best Jumpers from Reformation, Sézane, and COS:

      1. Reformation Jadey Sweater

       - Style Notes: If you're in search of the ultimate V-neck jumper, the Jadey is a perfect choice. Reformation combines classic design with a modern oversized silhouette. The thick ribbing enhances the neckline, cuffs, and hem of this jumper, which is made from 95% recycled cashmere and 5% recycled wool. It offers a cozy slouchy fit that's perfect for winter, and the real challenge is choosing from the stylish color options.

      2. COS Chunky Cashmere Crew Jumper

       - Style Notes: A sign of a great jumper is its annual return, and COS's Chunky Cashmere Crew-Neck Jumper has been a staple in their winter collections for years. With an oversized silhouette, drop shoulders, and a classic crew neckline, it’s made from 100% GCS cashmere and is a heavier style perfect for cold winter days. Its timeless design is a big reason for its repeat success, though new shades are introduced each year. I personally tried it on and instantly adored it. Ask me about its acclaim, and I’ll assure you it’s well-deserved.

      3. Sézane Gaspard Cardigan

       - Style Notes: Although the Gaspard (as seen above) is technically a cardigan, its clever design allows it to be worn back to front, creating a sleek knit with a button-up back. This style has been a top seller for years at the French brand, featuring a soft scoop neckline, classic fit, and intricately knitted texture. The accent buttons are a lovely detail, and it's available in various colors, from vibrant red to traditional navy. Made from a blend of super kid mohair and baby alpaca, this knit is incredibly soft, though it runs slightly large, so I’d suggest sizing down for a snug fit.

      4. Reformation Cove Cashmere Oversized Sweater

       - Style Notes: Reformation’s Cove sweater is the newest addition to my knitwear collection, and I'm currently wearing it as I write. Similar to COS's design, it features a classic crew neck and an incredibly relaxed fit, making it the ultimate cozy companion. I opted for a size down, which still offers an oversized appearance. With 95% recycled cashmere and 5% recycled wool, it’s a wonderfully warm addition for winter.

      5. COS Cashmere Funnel-Neck Jumper

       - Style Notes: Funnel-neck jumpers are a trend this season but remain a mainstay in many elegant wardrobes. The structured collar makes a bold statement in enduring knitwear, and COS's version is one of the finest I've come across. Though I’m wearing it in black, I can’t get my colleague's alluring bold red version out of my mind. Crafted from 100% GCS Cashmere, this luxurious knit is essential for your winter capsule wardrobe.

      6. Sézane Amiel Jumper

       - Style Notes: The infusion of baby alpaca wool in this jumper provides a naturally cozy feel along with a textured finish. The Amiel is a refined crew neck with soft ribbed accents around the neckline