Perfect the classic and casual ensemble in a white crew-neck t-shirt and black dress pants. White athletic shoes will bring a more relaxed aesthetic to an otherwise standard ensemble. During the winter months, when comfort is crucial, it can be easy to settle for a less-than-stylish look in the name of functionality. But this look is a good illustration that you can actually stay warm and remain equally stylish in the winter months. So if you need fashion tips on what to wear as you slip into your 30s, this combo is perfect.