40. Ryan McGinley

McGinley's photographs capture the fleeting moments of his idealized cast of twentysomething waifs. They wander through flowered fields at sundown, play in trees and caves after dark, and dematerialize into the flares of handheld sparkers. The whimsical fantasy of his youthful subjects has inspired hundreds of young photographers and Tumblrs while pioneering the modern aesthetic of road-tripping photography.

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Above: Olivia (Sparks), 2010