I'd really love to cosplay as one of my favorite female protagonists--either Emma Bovary or Anna Karenina. I certainly wouldn't be recognized at a con, but either one would be great for a photoshoot.
Anna Karenina is kiiiiind of a long book, but for those of you who haven't read
Madame Bovary, you definitely should! She's an adulterer in 19th century European society ... what more could you ask for?
