i did that last year, cept i called her "malice in wonderland". it was cute because i dressed my son up as the white rabbit. i took a french maid outfit, and converted it into the costume i needed. i had cool tights with spades, hearts, diamonds, and clubs on them. i wore a black wig with a heart ribbon in my hair, and had black shoes. my make-up was simple, but a little gothic looking. you may want to carry something like a knife. you may want to kinda distress the costume too. maybe put some rips in it. if it has a petticoat, perhaps let some of the tool or whatever it used to hang down, from under the skirt. good luck and have fun!