My mom was raised in a day-care center run by nuns. They weren't really supposed to take her because she was so little, but it was the Depression, and my grandmother needed to work, so they used to hide her in the convent. She saw them without their veils (I think they're called wimples??) and knew that they had very short hair. When all the other kids used to speculate that they shaved their heads, she used to get very upset, because the other kids never believed her when she said that the nuns weren't bald.