Candid pictures capture the birth of the groovy "teenage" generation in 1940s America

Drinking milkshakes, an evening at the drive-in and dancing the night away: Candid pictures capture the birth of the 'teenage' generation having a gas in 1940s America By Thomas Durante PUBLISHED: 17:19 GMT, 14 April 2013 | UPDATED: 13:07 GMT, 15 April 2013 Before Justin Bieber, One Direction and Gossip Girl, the carefree teens of the early 1940s sipped milkshakes, listened to records and went on their first dates – usually to the movies to catch a flick. The stunning images by photographer Nina Leen, captured daily life of the American teenager as the country emerged from the Great Depression and World War II was waged abroad