For Preppy Vibes: Cable-Knit Sweater Vest Channelling your inner school kid or actually headed back to campus this fall? This Cable-Knit Sweater Vest ($20) will make you look preppy and put-together for class. It's a fun way to add subtle colour to your fall layers. Image Source: www2.hm.com Cable-Knit Sweater Vest $20 from www2.hm.com Buy Now