Katherine Power and Hillary Kerr cofounded pioneering fashion and style site WhoWhatWear after a chance encounter on the set of 'Project Runway'. A decade later, the former magazine editor and journalist preside over a media, tech, and commerce empire backed by more than $14 million in investment. Power tells us how the two grew Clique Media Group, why they decided to branch out (apparel, books, and more), and what they've learned about millennial -- and Gen Z! -- women.