Cristina Green

Retail tycoon Philip Green brought trendy British fashion to New York with clothing chain Topshop in 2009 with help from supermodel buddy Kate Moss. This year he will come ashore with a bigger splash: his joint venture with Simon Cowell, Greenwell Entertainment, launches its own reality talent show on America's Fox TV this fall. Ads for the U.S. version of Britain's super successful X-Factor have already started airing. High school drop-out got his first break apprenticing with a London show importer. Bought his first store in London selling discounted designer brands at 27 and climbed up the retail ladder. Bought then-struggling Arcadia Group in 2002 for $1.2 billion. Group sales now total $4.4 billion. Shares fortune with wife Cristina through investment vehicle Taveta Investments. Was named International Retailer of the Year by the U.S. National Retail Federation in Jan. 2011.