A model prepares backstage at the Meskita fashion show during Mercedes-Benz Fashion Week Spring 2015 on September 4, 2014 in New York City. (Photo by Larry Busacca/Getty Images for Meskita)
A model presents a creation from the Tom Ford Spring/Summer 2015 collection during London Fashion Week September 15, 2014. (Photo by Suzanne Plunkett/Reuters)
A model wears a creation for Anthony Vaccarello's Spring/Summer 2015 ready-to-wear fashion collection, presented in Paris, Tuesday, September 23, 2014. (Photo by Jacques Brinon/AP Photo)
A model presents a creation from the Betsey Johnson Spring/Summer 2016 collection during New York Fashion Week in New York, September 11, 2015. (Photo by Andrew Kelly/Reuters)
A model uses a hat to cover her face as stylists apply hairspray backstage before the Ashish Spring/Summer 2016 collection during London Fashion Week in London, Britain September 22, 2015. (Photo by Suzanne Plunkett/Reuters)
A model takes selfie with mobile phone as she presents a creation from the Dolce & Gabbana Spring/Summer 2016 collection during Milan Fashion Week in Italy, September 27, 2015. (Photo by Stefano Rellandini/Reuters)
Models are filmed walking backstage before the Victoria's Secret Fashion Show in the Manhattan borough of New York November 10, 2015. (Photo by Carlo Allegri/Reuters)
Model Bella Hadid falls as she walks the runway at the Michael Kors Spring 2017 Runway Show duing New York Fasion Week at Spring Studios on September 14, 2016 in New York City. (Photo by Rex Features)