I don't know! She keeps changing her mind. She really wants to be Hermione but she cut all of her hair off (has the exact color) & now she doesn't want to be her. We found my niece's old Tinkerbell costume that fits but she doesn't want to wear that. She thought about being Uhura again but decided against that too.
She's going to be Bombalurina from CATS, this will be the third year now. However, she is also going to another party where she will be a water nymph/fairy. We put so much time and effort into costumes she wears them over & over (she's 16 yo), so she can't trick or treat, but her & her friends take all the younger siblings around. It gives them a chance to dress up, too.