The preppy costumes on Gossip Girl may be the reason why plaid is everywhere this Fall. But retailers have taken the pattern well beyond its uniform and hunter roots. This season you’ll find plaid in pastel hues and muted tones. Although plaid flannel is still a staple, designers are also offering plaid in unexpected fabrics like chiffon and taffeta. So check out the slideshow after the jump to learn how you can wear plaid from your shoulders to your toes.Click the pictures for more info!