• No breast budding
• No pubic hair growth

Sexual Development Stage 2:
Age: 9 - 13 years

• Small breast buds
• Fine, delicate, fuzzy pubic hair growth

Sexual Development Stage 3:
Age: 12 - 14 years

• Enlarging breast buds
• Increased pubic hair, mainly in the center and not extending out to thighs or upward; dark and coarser

Sexual Development Stage 4:
Age: 12 - 15 years

• Noticeable growth of pubic hair in a triangle, the shape it will take in adulthood
• Underarm (axillary) hair growth visible
• Breasts form mounds
• Menarche

Sexual Development Stage 5:
Age: 14 - 18 years

• Breasts fully formed
• Pubic hair is adult in quantity and forms an upside-down triangle, a shape common to women