She was going to dress as the Joker and if asked who she was, she would have responded "a 2008 Comic-Con attendee" which was funny, but a bit too meta.
This is a bit meta too, though, since Chris Nolan and Heath Ledger were inspired by Alex -- a fact which Sky guessed all on her own. Reasons to be proud: Infinite.
Welcome to the new LiveJournal
Some changes have been made to LiveJournal, and we hope you enjoy them! As we continue to improve the site on a daily basis to make your experience here better and faster, we would greatly appreciate your feedback about these changes. Please let us know what we can do for you!