Prudishness is pretense of innocence without innocence.
Women have to remain prudish as long as men are sentimental, dense, and evil enough to demand of them eternal innocence and lack of education. For innocence is the only thing which can ennoble lack of education.
I don't wear a bikini on the beach. I walk around my house in pyjamas. I haven't seen myself naked in the mirror for probably a decade. I'm very prudish.