Rosie dressed up as the little mermaid, but she took her own spin on it, since she doesn't like dresses. She asked to carry the presents in, since then it would look like she got Cece a lot of awesome things. She did all the activities, enjoyed the cake and coloring on the walls and rocked at her first time skating (after she fell several times and finally got the hang of it).
Anthony dressed up as Peter Pan and brought Cece 3 brand new princess dresses (that aren't disney) so that she could make pretend a new princess whenever she wanted. Dresses are players choice.