Designers Eileen Fisher, Olivier Rousteing of Balmain and Sir Paul Smith — along with Outdoor Voices’ Tyler Haney, Reformation’s Yael Aflalo, fashion executive Ermenegildo Zegna, SoulCycle and WeWork’s Julie Rice, CAA Global’s Steve Hasker, Matchesfashion.com’s Ulric Jerome and Li & Fung’s Spencer Fung — offered their insights at the WWD Apparel & Retail CEO Summit late last year in New York.