Yes the petticoats were "paper nylon" as Gillian says.
As I remember it we just used to soak them in hot water into which much sugar had been dissolved and then they drip dried on the washing line.
Dunno why we didn't use starch.
They used to stick out beautifully under the full skirts until the body heat from rocking and rolling melted the sugar again and we and our petticoats returned home somewhat limp but still sweet sixteen.
I have a pic somewhere but will have to add it later I guess. It is not very dashing, just me in black and white standing in my nana's back garden looking embarrassed and maybe in a fullish cotton skirt if I remember rightly. [Found it - only one petticoat i think]
I expect I was about 13, far too tall and with defiantly curly hair that led to me being nicknamed Golly, in those un-PC times.
My mother insisted I brush it back off my face, i hold much against my mother but that was one of the deepest crimes, she told me I would look awful with a fringe. Since leaving home I have never been without one.