So as you can see, looking effortlessly sleek doesn't require that much effort. Choose a navy denim blazer and blue jeans and you'll look awesome. A pair of black leather boots is the glue that brings this getup together. This look is a pretty smart pick, especially for fall, when the temperatures are getting lower. So if you're on a mission for outfit inspiration for dressing as you slip into your 30s, this getup is definitely worth saving for later.