Building Buzz off the Runway

GUCCI HAS COME to dominate fashion season social media with its mix of pop culture and high fashion — like a new Mickey Mouse head handbag the brand unveiled here Monday. But rivals are rapidly ramping up their efforts to challenge Gucci's buzz-building crown.
 Gucci's Paris show demonstrated its conversation-starting savvy: A model walked the runway with a large white cockatoo named Kiki sitting on her shoulder. A photo