Pairing a white print crew-neck t-shirt with grey jeans is an on-point idea for a casually dapper ensemble. And if you wish to instantly dial up your ensemble with footwear, complete this getup with a pair of black suede derby shoes. When temps are dropping and autumn is setting in, you'll appreciate how perfect this ensemble is for transeasonal weather. And if we're talking style tips for 20-year-olds, this look is perfect.