comic book fans around the world dressed up in unison in an attempt to break a world record for the largest gatherings of people dressed as dc comics superheroes within 24 hours .
the april 18 event kicked off in queensland , australia , with a celebration at the movie world australia theme park and ended in los angeles , california , at the hollywood & highland center .
it ended in style in los angeles , california , taiwan and the philippines all participated .
venues in 15 cities , including los angeles and queensland , participated in the event .