Mary Dillon

Dillon has overseen one of the most spectacular retail expansion stories ever, and she is convincing investors—who have sent the stock up 25% year over year—that she can keep building Ulta. With online sales rising nearly 40% a quarter, an industry-leading loyalty program, and all the new high-end beauty brands she’s lined up, it’s clear Ulta continues to prove a traditional retailer can battle Amazon. Dillon recently joined the board of private equity giant KKR, further cementing her status as a power broker.