Signature Dress Collection

[TaraWasHere]

We are planning on doing the signature package this trip for my youngest. It will be her very first trip to the boutique, as she is finally old enough! They obviously didn't have the collection when my oldest would go, and my nieces never did anything other than the castle package so I never really looked all that closely at the dresses. I know they obviously keep a limited number of dresses in stock, and there is no assurance that any of those dresses will be there. I don't want to have to prebuy the dress, as I want her to be able to do the full "shopping" experience as well. However, for those who have done the signature package, how much luck did you have getting the dress you wanted for your child? I never had an issue getting the dress we wanted before, but those costumes are all over the parks anyways.