Contrary to that other Joe's opinion, a rockabilly girl embraces the alternative fashion from post 1940-1965. She comes in all shapes, ages and clothing sizes from petite to curvy. 14 years-40. typically wears her hair like Betty Paige or any Old Hollywood Era starlet and dresses in anything from Rosie the Riviter, to Marianne from Gilligan's Island to Joan Harris of the first few seasons of Mad Men.