4-year-old Nigerian Girl with Fully Developed Big Breasts

She's just 4 years of age and already grown breast of the size of a matured teenager.

According to 'Shari Nethersole' a physician at Children’s Hospital, Boston, and an instructor in Pediatrics at Harvard Medical School.

The onset of breast development in girls less than 8 years of age may be the first sign of precocious puberty or more likely a condition referred to as benign premature thelarche. Benign thelarche is most commonly seen in girls who are under 2 or older than 6 years of age. In those girls under 2 years, breast tissue is thought to be a consequence of infant gonadotropin secretion and ovarian hormone production. History and physical findings that support benign development include presence of breast tissue since birth, waxing and waning size of breast development, absence of other pubertal signs, and no evidence of linear growth acceleration. Additionally, benign thelarche in girls under two years rarely exceeds Tanner stage II development.