Sexual Maturity Rating (SMR)

Girl (Breast development) Boys & Girls (pubic hair development)
breast development boy
  • Preadolescent breast (Tanner stage 1)
  • Breast buds with areolar enlargement (Tanner stage 2)
  • Breast enlargement without separate nipple contour (Tanner stage 3)
  • Areola & nipple project as secondary mound (Tanner stage 4)
  • Adult breast (areola recedes, nipple retracts) (Tanner stage 5)

Illustration by Michal Komorniczak [CC BY-SA 3.0]

  • Preadolescent (Tanner stage 1)
  • Sparse, pale, fine (Tanner stage 2)
  • Darker, increased amount, curlier (Tanner stage 3)
  • Adult in character but not as voluminous (Tanner stage 4)
  • Adult pattern (Tanner stage 5)

Illustration by Michal Komorniczak [CC BY-SA 3.0]

Print Friendly, PDF & Email