Marrying a mint suit and a black zip neck sweater will be a true reflection of your styling expertise. Introduce a pair of black and white athletic shoes to the equation to make a mostly dressed-up outfit feel suddenly edgier. A good illustration of transitional fashion, this ensemble is a staple come warmer days. In your thirties, you probably want to start dressing more maturely. In this case, combinations like this are a goofproof option.