Make a black crew-neck sweater and black skinny jeans your outfit choice for both sharp and easy-to-create ensemble. Let your sartorial prowess really shine by completing this look with a pair of dark brown suede chelsea boots. During the winter months, when practicality is prized, it can be easy to settle for a less-than-stylish look in the name of convenience. This look, however, is a good illustration that you can actually stay comfortable and remain equally stylish during the winter months. This pairing demonstrates that cracking the fashion code as you step into your 30s is quite manageable.