Teenagers in the 1950s generally dressed in simple styles and had easy care hairstyles like this one here in this picture of a young girl with a pixie cut.
She has short bangs and the sides are cut just about mid ear. This is similar to a boy's bowl cut with graduated lengths and a textured look. The locks are straight which adds to the simplicity. She is wearing a white dress that has a fitted bodice and full skirt that hits just above the ankle. She is wearing white pumps.
This was a very typical style for a girl celebrating her sweet 16.