This combo of a black leather biker jacket and navy jeans is on the casual side yet it's also on-trend and incredibly sharp. For a truly modern hi/low mix, introduce a pair of brogues to the mix. So if you need fashion tips on how to dress as you make it through your 20s, this pairing is a good example.
Why not try teaming a tobacco overcoat with navy jeans? Both of these pieces are totally functional and look nice when combined together. For something more on the dressier end to complete your look, introduce brogues to the equation. As you're heading into your 30s, you probably want to start dressing like an adult. In this case, inspiration like this comes in very useful.