Holly also has fairy wings that can unfurl and fold back up again. Creating these for the costume required a lot of research. “We looked into what kinds of insects start off with their wings in a small space and expand to a large space,” says Differ.
Eventually, they designed the wings to unfurl like those of ladybugs. These insects keep their wings folded under a hard shell when they aren’t flying. Differ and her team used a backpack to store the folded wings. “We made the wings like tiny pieces of glass that form a windowpane and then fold into a really small size,” she adds.
All the hard work paid off. Holly’s police uniform is Differ’s favorite costume from the film. “It fits her so beautifully,” Differ explains. “I’m hoping it gives the audience the flavor of the books.”