What Gives the Logo Its Legs

Image Celebrating Fendi mania at the Fendi store on Madison Avenue.CreditAmy Lombard for The New York Times At a party last month, Gabriela Silvarolli embraced the full Fendi. Ms. Silvarolli, a stylist and designer, was swathed from her chin to her calves in the company’s signature double FF logo. Her turnout was excessive, she knew.…