An excerpt | “There definitely is a sheer story out there. . . . . Clare Hefferren, President of Callosum Creative Ltd., an image consultant for Chicago-area professionals, suggests taking advantage of the sheer layering trend to ease into the warmer temperatures.“The layer can take us from our 40 degree morning commute to a 70 degree . . . lunchtime break,” Hefferren says. www.StyleChicago.com