Big hair in the context of "Pantomime dame"

A pantomime dame is a traditional role in British pantomime. It is part of the theatrical tradition of travesti portrayal of female characters by male actors in drag. Dame characters are often played either in an extremely camp style, or else by men acting butch in women's clothing. They usually wear heavy make up and big hair, have exaggerated physical features, and perform in an over-the-top style.