Parental fantasies about who their children are and the relationship they will have with each other are commonplace and are usually out of awareness and relatively benign. However, such fantasies often manifest in attributions and labels that can become templates as to how parents think about their children and the sibling experience they will have. In this commentary, three issues are highlighted: first, the need for more conscious awareness about the tendency to label and designate fixed attributions to children; second, the role of the developmental process and how new meanings and conflicts evolve as developmental transformations arise from within; and third, the long-term impact of such designations as they are reworked with increasing complexity throughout the life span. Examples from an intensive psychotherapy are highlighted.