A model checks her mobile phone backstage during Kazakhstan Fashion Week in Almaty, Kazakhstan, October 14, 2015. (Photo by Shamil Zhumatov/Reuters)

A model waits to present a creation by Chinese designer Hu Sheguang for his collection show during China Fashion Week S/S 2016 in Beijing October 26, 2015. (Photo by Jason Lee/Reuters)

A women wearing a mask to protect from extreme smog visits the Tiananmen Gate in Beijing December 8, 2015 as China's capital issues its first ever "red alert" for pollution. (Photo by Damir Sagolj/Reuters)

A model gets final adjustments back stage before participating in a plus size fashion show in Nairobi, Kenya, October 7, 2017. (Photo by Baz Ratner/Reuters)

A model poses backstage at the Topshop Unique catwalk show during London Fashion Week in London, Britain February 19, 2017. (Photo by Neil Hall/Reuters)

A model presents a creation by Chinese designer Chen Wen at China Fashion Week in Beijing, China March 29, 2017. (Photo by Jason Lee/Reuters)

(L-R) Poppy Delevingne, Model of the Year Cara Delevingne, Joan Smalls and Karlie Kloss pose in the winners room at the British Fashion Awards at London Coliseum on December 1, 2014 in London, England. (Photo by Pascal Le Segretain/Getty Images)

A model presents a creation of Peruvian designer Ani Alvarez Calderon during Fashion Week in Lima, Peru, April 25, 2017. (Photo by Guadalupe Pardo/Reuters)