(6 of 12) Fall-Winter 2007 TrendsAs cooler temperatures finally set in, now’s the time to get serious about shopping for new fall clothes. Stores are currently packed with bold new separates. To keep you from going overboard with new acquisitions, we outline the key elements needed to update your wardrobe. Feathers Forget about sequins, crystals, or ribbons: Feather plumes are the season’s chicest embellishment. For those who appreciate such flights of fancy, Marc Jacobs, Miuccia Prada, and Catherine Malandrino whipped up many a plume-trimmed evening gown.