Breast Budding
Breast development starts usually occurring around 10.5 years of age, and is a sign of starting puberty.
Pubic Hair growth
Pubic hair initially only starts occuring light and thin, but becomes coarser and darker over time.
Growth Spurt
Girls experience a growth spurt between 8-13, a few years before boys. During this time, girls will experience their height increasing at the fastest rate during puberty.
First Period (Menarche)
Menstruation usually starts around 2 years after breast development starts, with the average age for starting menarche being the age of 12.
Acne
Acne can start appearing during the growth spurt and can potentially remain and persist throughout puberty.