Remarkably, very few princesses have any siblings at all. Cinderella has 2 step-sisters; Ariel has 6 older sisters; Merida has 3 younger brothers; and Moana has a younger sister (Simea).
Interestingly, Merida's brothers' names all begin with the letter H (Harris, Hubert and Hamish), and Ariel's sisters' names all begin with the letter A (Adella, Alana, Andrina, Aquata, Arista and Attina).
