The V-Neck Sweater is a must-have because you'll need warm layering pieces for the cooler months, and it helps you to mix and match your Important Wardrobe a little better by layering it under a blazer or suit, over an oxford or semi-spread collar dress shirt, and matched with simple dark wash jeans or wool trousers and a white sneaker, boots, or oxford dress shoes. So how did I manage to leave it off this list?