It's also common for breast buds to be somewhat tender or sore. Once a girl has had her first period, her growth has already started to slow.
Thelarche is the onset of secondary breast development, which often represents the beginning of pubertal development. The initial growth of breasts occurs during fetal development in both males and females. Thelarche is the stage at which male and female breasts become distinct Thelarche, also known as breast budding, typically occurs between the ages.
Female breast developmental stages. Stage 1. Preteen. Only the tip of the nipple is raised. Stage 2. Buds appear, and breast and nipple are raised. The dark.