Riquet with the Tuft by Dinah Mulock — Read

Once upon a time a queen had a little son, who was so ugly and ill-made, that for a long time the poor little baby was thought hardly human. However, a good fairy, who presided at his birth, assured his mother that, though ugly, he would have so much sense and wit that he would never be disagreeable; moreover, she bestowed on him the power of communicating these gifts to the person he should love best in the world. At this the queen was a little comforted, and became still more so, when, as soon as he could speak, the infant began to say such pretty and clever things that everybody was charmed with him. (I forgot to mention that his name was Riquet with the Tuft, because he was born with a curious tuft of hair on the top of his head.)

Seven or eight years after this, the queen of a neighbouring country had two little daughters, twins, at whose birth the same fairy presided. The elder twin was more beautiful than the day -- the younger so extremely ugly that the mother's extravagant joy in the first was all turned to grief about the second. So, in order to calm her feelings, the fairy told her that the one daughter should be as stupid as she was pretty, while the other would grow up so clever and charming that nobody would miss her want of beauty.