A model poses prior the Etam show as part of the Paris Fashion Week Womenswear Spring/Summer 2018 on September 26, 2017 in Paris, France. (Photo by Vittorio Zunino Celotto/Getty Images)
A Cholita (Andean woman) model poses during a practice session of Rosario Aguilar fashion model school in La Paz, Bolivia, February 23, 2019. (Photo by David Mercado/Reuters)
A model displays the collection of Italian luxury brand Diesel at its China's first flagship shop unveiling ceremony, at Henglong Plaza on November 26, 2005 in Shanghai, China. (Photo by China Photos/Getty Images)
Models at the Sophia Webster presentation during London Fashion Week Spring Summer 2015 on September 14, 2014 in London, England. (Photo by Anthony Harvey/Getty Images)
Australian model and designer Madeline Stuart, who has Down syndrome, acknowledges attendees after presenting creations from her label 21 Reasons Why By Madeline Stuart during New York Fashion Week in Manhattan, New York, U.S., February 12, 2017. (Photo by Andrew Kelly/Reuters)
A model walks down the runway at the 13th China International Young Fashion Designers Contest during China Fashion Week on March 25, 2005 in Beijing, China. (Photo by China Photos/Getty Images)
Madeline is the first person with Down's syndrome to ever stride down a runway as a model during New York Fashion Week. Here: Model Madeline Stuart stands backstage between two male models at New York Fashion Week in New York City, U.S., September 6, 2018. (Photo by Andrew Kelly/Reuters)
Production Designer Stuart Craig was on hand today at Warner Bros. Studio Tour London - The Making of Harry Potter to reveal one of the best kept secrets of the tour: the incredibly detailed model of Hogwarts castle used in the films.