The slim fit cardigan has a fitting problem that most brands refuse to acknowledge. Too many of them are cut with so much room through the body that they look shapeless over a shirt, and too many others are cropped so aggressively that they work only with very specific outfits. Neither is much use in a real wardrobe. What actually works is a cardigan with a clean, fitted silhouette through the chest and waist that still moves properly and sits flat when buttoned. One that you can wear over a collared shirt without the collar bunching underneath, and that looks equally at home with tailored trousers or dark denim. We have been specifically looking for fine to midweight options where the cut does the heavy lifting rather than relying on the novelty of the color or some unnecessary design detail. These cardigans are slim without being tight, polished without being precious, and useful enough to earn permanent space in your rotation.