This is a 5-stage system proposed by Marshall and Tanner in 1969 for grading female breast and pubic hair development.
Tanner staging of Breast Development
- Elevation of papilla only (pre-pubertal breast)
- Breast budding
- Enlargement of breast without areola separation/elevation
- Formation of secondary mound by areola
- Mature breast: areola regresses to form single contour of breast, only papilla remains projected.