This city casual combo of a grey long sleeve shirt and white jeans is super easy to throw together in next to no time, helping you look seriously stylish and prepared for anything without spending too much time rummaging through your wardrobe. When it comes to footwear, complement this outfit with a pair of dark brown suede low top sneakers. You're sure to always look cool even despite the sweltering heat if you keep this getup as a last-minute grab. This combination suggests how to look stylish as you go through your 20s.