A model slips on the runway while parading an outfit by Australian designer Toni Maticevski at Fashion Week Australia in Sydney on May 15, 2016. (Photo by William West/AFP Photo)

Models pose backstage ahead of the Zhivago show at Mercedes-Benz Fashion Week Resort 17 Collections at Carriageworks on May 16, 2016 in Sydney, Australia. (Photo by Mark Nolan/Getty Images)

A model walks the runway at the Christian Siriano X Lane Bryant Collection at United Nations on May 9, 2016 in New York City. (Photo by JP Yim/Getty Images)

Models wear creations from the Ronaldo Fraga collection during the Sao Paulo Fashion Week in Sao Paulo, Brazil, Monday, April 25, 2016. (Photo by Andre Penner/AP Photo)

A model presents a creation by Kazakhstan's design house Khafiz Khan during Kazakhstan Fashion Week in Almaty, Kazakhstan, April 21, 2016. (Photo by Shamil Zhumatov/Reuters)

A model is reflected in a mirror as she applies make up backstage during Kazakhstan Fashion Week in Almaty, Kazakhstan, April 19, 2016. (Photo by Shamil Zhumatov/Reuters)

epaselect epa05234254 A model presents a creation from the Beijing Institute of Fashion Technology Emerging Design Collection at the “BIFT ELLASSAY” Scholarship Awarding Ceremony during the Mercedes-Benz China Fashion Week at the Beijing Hotel, in Beijing, China, 29 March 2016. (Photo by Wu Hong/EPA)

A model presents a creation by Chinese designer Hu Sheguang from Sheguang Hu collection at China Fashion Week in Beijing, March 31, 2016. (Photo by Jason Lee/Reuters)