A model falls and gets help back to her feet during the fashion show for the Givenchy Spring 2016 collection at Fashion Week on, Friday, September 11, 2015, in New York. (Photo by Bebeto Matthews/AP Photo)

A model presents a creation by designer Nadir Tati, as part of her Summer 2016 collection, during Lisbon Fashion Week, Portugal, October 11, 2015. (Photo by Rafael Marchante/Reuters)

Boys eat at a rubbish dump where they are collecting recyclable waste outside Yemen's Red Sea port city of Houdieda January 20, 2016. (Photo by Abduljabbar Zeyad/Reuters)

A displaced Pakistani girl collects recyclable goods from a garbage to earn living for her family in Islamabad, Pakistan, Tuesday, January 19, 2016. (Photo by B.K. Bangash/AP Photo)

A model wears a creation for Yves Saint Laurent's Fall-Winter 2016-2017 ready to wear fashion collection presented Monday, March 7, 2016 in Paris. (Photo by Thibault Camus/AP Photo)

A model presents a creation by designer David Ferreira, as part of his Fall/Winter 2016/17 collection, during Lisbon Fashion Week, Portugal, March 11, 2016. (Photo by Rafael Marchante/Reuters)

A model presents a creation from Lino Villaventura Summer 2016 Ready To Wear collection during Sao Paulo Fashion Week in Sao Paulo April 16, 2015. (Photo by Paulo Whitaker/Reuters)

A model presents a creation from the Liu Bolin Debut collection during New York Fashion Week in the Manhattan borough of New York City, U.S., September 10, 2017. (Photo by Amr Alfiky/Reuters)