Publisher Simon & Schuster releases the book, “Sparkle” (Atria Books; August 2012; $15) just in time for the theatrical release. THEY HAD A DREAM. SHE HAD IT ALL. Detroit, 1968. The Motown sound is sweeping the nation. Girl groups are hotter than ever. Over their mother’s objections, three beautiful sisters—Delores, Sister and Sparkle—are taking the […]