Mary Dillon

Since taking over the Bolingbrook-based beauty chain in 2013, the former U.S. Cellular CEO has dazzled the retail industry: Last year, the company saw a rise in earnings of more than 20 percent, with its stock price surging 32 percent. Dillon’s five-year plan? Add 100 new stores a year (there are currently 765 locations) and invest in e-commerce.