A cool pair of '90s overalls might come in a light acid wash and with cargo pockets or a loop on one leg. To achieve a look most reflective of the decade, start with a breezy white T-shirt and make sure you finish with platform sneakers. Vans, Converse, Reebok, or Nike kicks all fit the bill. Of course, a backpack is a '90s staple, too, so adding one on will really drive your point home.