Just three days later:
Mom: Okay, so you want to be Hanna Montana, you have the boots, we can make you a cardboard guitar, what do you need for clothes?
DD 6: I don't want to be Hanna Montana any more. I want to be Tinker Bell.
The organized mother in me (she gets lost a lot, but she is there) wants to run right out and get the costume to check it off her list, but I've got a feeling that she'll be changing her mind.