Extremely stylish, this off-duty combination of a long sleeve shirt and a navy crew-neck t-shirt offers wonderful styling possibilities. If you're hesitant about how to finish, add a pair of white canvas low top sneakers to the mix. This outfit is a winning option if you're scouting for a great, summer-appropriate outfit. Just because you're a teenage boy, doesn't mean you can't look fashionable, and this combo illustrates just that.