Karen Tack is the coauthor of the New York Times best-selling Hello, Cupcake! She is a cooking teacher and a food stylist and has created cupcakes and other desserts for the covers of many of America's top magazines, including Bon Appétit, Gourmet, Cook's, Good Housekeeping, Family Circle, Every Day with Rachael Ray, Woman's Day, Martha Stewart Living, Parents, Real Simple, Family Fun, and All You.