My daughters birthdays are such a great opportunity to get creative (given the time limitation). Every year, I ask Mimi how she wants the cake to look like. On her fourth birthday, she wanted tinker bell. I bought the Wilton Wonder Mold. I got it from Tavola. It is extremely cost effective considering the number of different princesses cake you can do.
I got her a costume as well to match with the theme. She liked the cake and she was happy to help me as well. After the success of Tinker Bell, we used the same mold to make Cinderella.
*all super reviews on my blog are purely based on my own humble experience that I am keen to share with you