Extremely dapper and comfortable, this combination of a white crew-neck t-shirt and navy skinny jeans will provide you with variety. To give this look a dressier feel, why not add white canvas low top sneakers to the mix? Rest assured, this combination will keep you warm as well as looking stylish in this summer-to-fall weather. Wondering how to master casual dressing as you are making it through your teens? This combination is a vivid example.