For a casual outfit, marry a charcoal blazer with a tan crew-neck t-shirt — these pieces work beautifully together. And it's amazing what a pair of white canvas low top sneakers can do for the look. Keep this combination in your front hall closet come warmer weather, and we guarantee you'll save time brainstorming for an outfit on more than one occasion. Those wondering how to rock classic and casual looks in your early 20s, this combo should answer your question.