This classic and casual combo of a beige trenchcoat and blue jeans is very easy to pull together in next to no time, helping you look on-trend and ready for anything without spending too much time rummaging through your wardrobe. Navy and white athletic shoes will add a more relaxed aesthetic to an otherwise mostly dressed-up ensemble. Wondering how to perfect casual dressing as you make your way through your adolescence? This pairing is a good illustration.