Marrying a long sleeve shirt with olive dress pants is an on-point idea for a stylish and refined ensemble. Finishing with a pair of dark brown leather brogue boots is an effortless way to inject a mellow vibe into your ensemble. In the colder months, when warmth is the priority, it can be easy to settle for a less-than-stylish outfit in the name of practicality. This outfit, however, is a good illustration that you can actually stay cozy and remain stylish in the colder months. This getup illustrates that in your 30s you have a wide range of styling options.