This audience includes a Lucius Malfoy, a Severus Snape, a couple of Luna Lovegoods and at least three Bellatrix Lestranges. Or rather, these are students dressed as those “Harry Potter” characters, as well as a couple hundred of their University of Southern California classmates, many of whom showed up to their screenwriting class that evening in cosplay.
Source: latimes.com – Los Angeles Times