To put together a casual getup with a modern twist, consider teaming a white and black short sleeve shirt with grey chinos. A pair of low top sneakers serves as the glue that brings this ensemble together. This getup demonstrates how to kill in semi-casual dressing as a teenage guy.
Marry a white and black short sleeve shirt with dark brown chinos if you wish to look casual and cool without much work. When not sure as to the footwear, stick to low top sneakers. This getup illustrates that figuring out fashion as you go through your teenage years is not that daunting a task.