Pair a grey blazer with a cable sweater if you're going for a proper, on-trend ensemble. Let your styling skills really shine by rounding off your outfit with a pair of black leather derby shoes. Wondering what you should wear as you progress through your 20s? This getup is a good illustration.
As you can see here, looking casually classic doesn't require that much effort. Just choose a grey blazer and a cable sweater and you'll look awesome. When this ensemble is too much, tone it down by finishing with a pair of white canvas high top sneakers. This ensemble shows how to kill in casual dressing as a 20-year-old gent.