(W) Paul Dini, Marc Andreyko (A) Laura Braga (CA) Emanuela Lupacchino. It's her (father's) party and she'll cry if she wants to* because Veronica and Betty's killer costume idea was stolen by two crashers from Gotham City! Of course* she can't know that she's facing off with the real Poison Ivy* or that Betty's about to get bopped by Harley Quinn herself. Whoops!