If the situation permits casual dressing, you can rely on a tan shirt jacket and a white and black print crew-neck t-shirt. Complement your getup with white and red leather low top sneakers and you're all done and looking amazing. It's is a wonderful choice if you're figuring out a neat look that will take you from summer to fall. If you're not sure how to dress as a 20-year-old, this ensemble is a fail-safe option.