Combining a navy and white shawl cardigan and a long sleeve shirt is a fail-safe way to inject your closet with some relaxed refinement. Serve a little outfit-mixing magic by slipping into a pair of tobacco leather oxford shoes. So if you're looking for a killer ensemble that will take you from winter to spring, this one fits the task well. As you slip into your 30s, you probably want to start dressing more maturely. In this case, combinations like this are a life saver.