Rebecca Rubin Film and Media Reporter A musical adaptation of “Girls Just Want to Have Fun,” the 1985 teen comedy starring Sarah Jessica Parker and Helen Hunt, is in the works. The stage show is based on the film’s screenplay by Amy Spies and features a score of 1980s chart-toppers, including the Cyndi Lauper hit that inspired the title. “Girls Just Want to Have Fun” tells the story of Janey, a high school gymnast whose strict Army colonel father instructs her to stay out of the spotlight.