03/20/2012 06:32 am ET Updated May 20, 2012

Kathy Ireland: From Model to Mogul

Kathy Ireland, the "Sports Illustrated" cover girl who was part of the first wave of "supermodels" (the others were Christie Brinkley, Cindy Crawford and Cheryl Tiegs), is now running a multibillion-dollar retail behemoth, and she's showing no signs of getting out of the game.

Ireland, who turns 49 today, is part of the group known as "model moguls," people like Jaclyn Smith and Crawford who have made big bucks by selling clothes, accessories, skin care lines and home furnishings branded with their name. But they can't hold a candle to Ireland, a devout evangelical Christian who's racked up $2 billion in retail sales and has (according to "Forbes") a staggering 15,000 products on the market. Ireland herself is worth an estimated $350 million.