Combining a brown suit with a navy dress shirt is an on-point choice for a dapper and refined look. Add a playful feel to this look by finishing off with dark brown suede loafers. You'll always look cool even despite the unbearable heat if you keep this outfit as your go-to formula. As you're heading into your 30s, you probably want to start dressing with more polish. In this case, outfits like this are a real lifesaver.