It was the 60's, and everyone set their hair with huge curlers or even those small frozen orange juice cans, slept on those awful hard curlers. And the next day you teased your hair up high and sprayed it stiff with cheap hair spray. I think AquaNet was 39 cents a can and I used to go through a can a week!
What a crazy time, but we all did it and looked the same, kinda like styles today. Everyone gets the same style (straight). At least the various styles come back sooner or later. I still tease my hair a little bit and wear it turned under and jaw length.