they are usually 15 or 16 years old
15 for teenage guys 16 for teenage girls
It's more common for teenage girls to have these "Sweet 16" parties.
The average bra size for teenage girls can vary widely, but it is generally around A to C cup sizes. It's important to remember that bra size can change frequently during the teenage years due to growth and development.
There is a big relation between sleep and growth spurts. Dr Lampl, from Emory University in Atlanta has proven it. Babies have a growth spurts during the sleep and in the early ages of their live. source: http://www.mindfulmum.co.uk/news/2011/never-wake-a-sleeping-baby/"
begins at 10 and ends at 16
During puberty, both boys and girls experience physical changes such as growth spurts, development of secondary sexual characteristics (like facial hair in boys and breast development in girls), and hormonal changes leading to sexual maturity. Hormones like testosterone and estrogen play a key role in these changes, which usually occur between the ages of 10 and 14 for girls and 12 and 16 for boys.
Girls and boys usually stop growing at different times. Girls finish between the ages of 14-16 and boys finish growing between 16-20 and sometimes more. Your ears and nose may keep growing throughout your lifetime.
All children stop growing when the growth plates in their long bones close. For boys it can be around 17-18. For girls it is a little younger 15-16. The end of growth occurs soon after puberty.
Maybe but mostly no. Well if her boobs are big and they make me aroused, yes
It is different for every female. Some girls can get their period as early as 8 and some girls as late as 16. It will just depend on your own personal growth rate.
Is the 4.5 inches in length or around? Sounds to me like it's the perfect size.