Theme party Ideas for 3 year old daughter?

My daughter will be turning 3 next month. My husband and I will be taking her to Disneyland but also want to have a small birthday party for her. I don’t know what theme to use she is really into Disney Princess’s rite now but that was her birthday theme last year. I think she is too young for Tinkerbelle and to old Abby Cad Abby any Birthday theme ideas