Billion dollar Jessica Simpson

Celebrities-turned-designers like Jennifer Lopez and Madonna may want to take notes from Jessica Simpson.

After all, her eponymous line of products have made close to a whopping $1 billion in 2010.



The Jessica Simpson brand has more than 20 categories of fashion and accessories including shoes, jeans, swimwear, watches and fragrance.

Says Vince Camuto, founder and CEO of Camuto Group, which is Simpson's licensee, "People like her. They look at her as a style icon."

Simpson's dedicated fan base helped retail sales of her brand rocket to $750 million in 2010.