My two favourite Disney trans princess narratives to date:

• Moana/Vaiana: Shaman princess acknowledging what she is and that she has to risk all social and anchoring assumptions because of it, eventually all is reconciled and her truth accepted: https://www.youtube.com/watch?v=cPAbx5kgCJo
• Frozen: Witch princess (queen – late transitioner after long denial period) having taken the steps and come out at high social cost, still certain that this is her reality and only authentic choice, building and reconciling her life; this is the starting point, rest of the story is all about her family eventually coming around to accept her: https://www.youtube.com/watch?v=moSFlvxnbgk