In this picture taken on March 29, 2016, Chinese model Xu Naiyu (C) speaks with her colleagues during China Fashion Week in Beijing. Tall and stereotypically thin, Chinese fashion model Xu Naiyu exudes a happy optimism but is matter-of-factly realistic about the fickleness of her chosen career, and how conventions of beauty change around the world. / AFP PHOTO / FRED DUFOUR / TO GO WITH AFP STORY BY BECKY DAVIS