"Updated and revised paperback of the definitive guide to understanding girls and cliques features new research on younger girls and online worlds"-- Provided by publisher.

Cliques and popularity -- Is It really happening so much younger? -- Passport to girl world -- Breaking through the wall -- Technology, social networking, and girl world -- The mirror -- Mean girls: teasing and gossiping -- Power plays and politics: speaking truth in girl world -- Boy world -- Girl world meets boy world -- Pleasing boys, betraying yourself -- Sex, drugs, alcohol, and partying in girl world -- Getting help.