Inject a hint of laid-back refinement into your current arsenal with a navy blazer and a tan crew-neck sweater. Up this whole outfit by rounding off with a pair of brown leather brogues. As the weather starts to improve, it's time to shed those heavy winter layers and choose something lighter, like this getup here. So if you're looking for outfit ideas on how to dress as you go into your 30s, this combination is ideal.