Dancers at the Windmill Theatre in London, England practice a routine wearing gas masks and hard-hats with their costumes, 1940. (Photo by Hulton Archive/Getty Images)
A businessman walks past an empty baby Tyrannosaurus rex costume near Faneuil Hall in Boston, Thursday, May 17, 2018. An actor left the costume on the sidewalk as he went to retrieve his parked car, after entertaining midday tourists. (Photo by Charles Krupa/AP Photo)
A participant in costume poses for a photo during a Halloween event in Kawasaki, south of Tokyo, Japan on October 28, 2018. (Photo by Toru Hanai/Reuters)
A participant wearing a fantasy costume poses for a picture during the Hero Festival in Marseille, France November 12, 2016. (Photo by Jean-Paul Pelissier/Reuters)