Book excerpt: Jackie Under My Skin is a nuanced description of how Jacqueline Kennedy Onassis transformed our definitions of personal identity and style. As Wayne Koestenbaum follows her into America's dreamwork, far from pious "family values," he dares to see her as a pleasure principle, a figure of Circean extravagance, and liberates her from the propagandistic uses to which her image if often harnessed.