The chin, jaw, and jawline are essential in defining facial contours and significantly influence a person’s overall appearance. These features are closely associated with gender perception, making them particularly important for transgender and non-binary individuals seeking gender affirmation. Aligning facial structure with gender identity can greatly enhance self-confidence and overall well-being. While facial characteristics naturally vary among individuals regardless of gender identity, certain general patterns are commonly observed. Typically, male facial structures feature larger, more prominent, and squarer chins with well-defined jaw angles. In contrast, female facial features often include smaller, rounder chins with smoother jawlines and less pronounced angles.