The little peanut, DGD, was five when we did this. She LOVED it, and so did her nanna. We brought her own Cinderella dress. I don't remember what the package was called but it was the "middle of the road" one and just right for us. She got make, facial jewels, glitter, a sash, special brush, nail polish and lip gloss. We may have paid extra for the crown, I can't remember.
We had the photo pass plus so they took lots of pics, we took our own too. I've heard that photo pass isn't at BBB anymore. She stayed dressed up until we closed the park that evening. Cast members were calling her little princess all day, she just "ate it up". It truly was worth the money for me to do this for her. She and I had a ball!