If you're scouting for a casual and at the same time sharp outfit, consider teaming a white long sleeve shirt with green chinos. Give a fun feel to your look by wearing white canvas low top sneakers. This combination illustrates that in your thirties your dressing options are looking good.
For a semi-casual outfit, pair a navy denim blazer with green chinos — these two pieces work beautifully together. Take an otherwise dressy outfit a more laid-back path with a pair of white canvas low top sneakers. Wondering what to wear as you slip into your 30s? This outfit is a vivid example.