This off-duty combo of a grey cardigan and a white print crew-neck t-shirt is ideal when you need to look casually stylish in a flash. Here's how to spruce up this outfit: dark brown leather casual boots. In the colder months, when practicality is the priority, it can be easy to surrender to a less-than-stylish ensemble. But this ensemble is a good illustration that you can actually stay warm and remain stylish at the same time during the colder months. If you frequently fret about dressing appropriately for your age, this pairing is a surefire option.