THE SHAPE OF OUTERWEAR has changed. It's looser, less constructed. It's easy to wear, it fits your lifestyle. Most important, as manufacturers strive to give American women the latest fashions, the same "look" can be attained at various price points, from the super expensive to much more affordable versions. This fall, snuggle up in a lean yet roomy Perry Ellis sweater coat with attached scarf, $570, from Mettlers in Charlevoix and Harbor Springs. Maintain the monochromatic "line" with white turtleneck sweater, short white skirt, white tights even white Perry Ellis sunglasses, $40. Classic COVER