A light blue long sleeve shirt and skinny jeans are the kind of a foolproof casual look that you need when you have no time to spare. With shoes, go for something on the classier end of the spectrum and round off your look with a pair of navy suede loafers. As you imagine, this is a kick-ass pick come warmer days. As you're growing, you probably want to start dressing more like an adult. In this case, inspiration like this comes in very handy.