So as you can see, it doesn't take that much work for a man to look effortlessly classic. Consider wearing a blue shirt jacket and a white long sleeve shirt and be sure you'll look incredibly stylish. A trendy pair of navy and white athletic shoes is an effective way to upgrade this look. If you feel uninspired by your transitional season fashion options, this outfit just might be the inspiration you need. When it comes to casual style tips for teenagers, this combo is perfect.