This casual pairing of a blue denim shirt and black chinos is a fail-safe option when you need to look sharp but have zero time. Look at how great this ensemble goes with a pair of white leather low top sneakers. A wonderful example of transeasonal fashion, this outfit is ideal this spring. As a 30-year-old gent, you want to start dressing more like a mature gentleman. If that's the case, combinations like this are a safe bet.