The tween is the «new girl on the block» in girlhood studies. Although the study of tween life may have derived from a particular marketing orientation at the end of the twentieth century, it is not limited by it. On the contrary, this collection of essays shows that «tween» is not a simple or unified concept, nor is it limited to a certain class of girls in a few countries. This collection by an international group of authors highlights specific methodologies for working with (and studying) tween-age girls, provides challenges to the presumed innocence of girlhood, and engages in an analysis of marketing in relation to girlhood. In so doing, this book offers a reading on these three or four years in a girl's life that suggests that this period is as fascinating as the teen years, and as generative in its implications for girlhood studies as studies of both younger and adolescent girls.