When I arrived at Thalian Hall for Opera House Academy's performance of Mean Girls, I was swallowed into a sea of pink (even though it wasn't Wednesday). A group of girls and women ranging from elementary school ages to moms posed in front of the poster outside. A middle schooler wore a t-shirt featuring the original film stars. A girl in the bathroom was wearing army pants and flip-flops. I'd never seen Mean Girls put on as a musical. I saw the film the night it opened, my 1