What is a girl? What does it mean? Is the concept universal? Where does the word “girl” come from? How is it interpreted? Studying the girl as both a concept, a cultural object, a lived experience, and other manifestations, is best carried out as a semiotic enterprise. This chapter relies on current semiotic models and cognate fields to identify what analytical criteria and methods are best suited to study the concept of “girl,” how it came to be forged, and how it encodes how we experience “girlhood.” The aim is to use this interdisciplinary approach in order to develop a “semiotics of girlhood” whose objective is to flesh out the unconscious meanings used to construct the concept “girl” via a specific sign system. The aim is to identify a semiotic approach that moves away from overarching descriptions leading to definitive conclusions and stereotypes.