Jessica Simpson may not have cultivated the reputation of World's Best Actress (or Singer), but she is at the top of the celebrity-fashion class at least when it comes to her bottom line. Last year, New York magazine noted that Simpson was on track to becoming the first celebrity whose fashion line would top $1 billion in sales. (She raked in $750 million in 2010.) When the publication put her on its February cover, it called her "Jessica Simpson, Fashion Mogul." In addition to shoes, apparel, accessories and fragrances, her line has recently expanded to include diamond-clad jewelry. Prices for the bling start at $79, which is indicative of Simpson's niche: she's the fashionable girl next door whose simple look other girls in the neighborhood can afford to copy.