Who can explain why teenagers do what they do? We sure can't, especially when it comes to this particular image. Our best guess? This portrait depicts the cast of a high school play or a festive pageant. Even though we don't know everything about this image, we're crazy about the glamorous costumes, the perfect exposure, and those quintessential "too-cool-for-school" facial expressions that you can still find over 100 years later on today's teenagers. We're forever grateful to Alice Curtis for snapping this gem.