How Jessica Simpson Built a Billion-Dollar Fashion Empire

Jessica Simpson's fashion line hauls in about $1 billion in annual sales, an aberration in a retail landscape littered with dead celebrity brands. David Hasselhoff's Malibu Dave, Mandy Moore's Mblem, Heidi Montag's Heidiwood … the list of defunct fashion labels of the famous is endless. Yet Simpson's line has not only survived, it's grown over the past decade into a true lifestyle empire. How did she accomplish such a feat? According to the pop star, Simpson just knows what women want.