Sweaters are more than something to throw on to stay warm in the cold and looking good in one is all about coordinating it with the rest of your outfit. V-neck sweaters, in particular, are great in that they are versatile and can go from ultra-casual to sporty-cool to boardroom-professional with just a few changes. On its own, or with a simple tee underneath, it's the perfect every day wear. Add a shirt underneath, or top it with a blazer and you've upped the ante. Slip on a tie as well, and you've hit the jackpot. The last thing to add is your smile.