The Wild Swans (1962)

The lives of Princess Elisa and her eleven brothers are changed forever when their father weds a beautiful but wicked woman. Possessing the power of witchcraft, she curses the children, turning the boys into swans and altering Elisa's appearance so her own father will not recognize her. Undeterred, Elisa never gives up hope that she will be reunited with her brothers once more and seeks a way to restore them to their original forms.