Fashion Industry Scrambles to Find a Use for Snapchat....LONDON — Here’s a question: What do looks from the catwalks at New York Men’s Fashion Week, a video of Gigi Hadid singing a duet with Taylor Swift and the latest cover of the annual Hollywood issue of Vanity Fair have in common? Answer: This week, all debuted exclusively on Snapchat, confirmation of the enthusiastic adoption of the messaging app by the worlds of fashion, media and entertainment. Since Snapchat was introduced in 2011, its popularity and growth have been explosive. The service, known for its blurry self-destructing “snaps” that can be scribbled upon and that contrast starkly with the curated, filtered scenes found on rival image-based apps like Instagram, has become a powerful social media platform with a $16 billion valuation and rumored plans of a public offering. It currently delivers more than seven billion video clips a day among its 100 million active users, most of whom are between the ages of 18 and 24.