Roll-neck sweaters, like J.Crew's signature ones, are the ultimate cozy-girl wardrobe staple. With comfy-chic co-signs from big names like Martha Stewart, it's no surprise that the brand's $98 sweaters are almost always sold out in at least one shade. If you love the luxe appeal of J.Crew's elevated top, refresh your cold-weather wardrobe with these designer-looking Amazon sweaters. Not only do they mirror the mall brand's sophisticated style, but they also cost less than $50.