There is no specific time or age. Developing breasts is a part of puberty.
People develop at different speeds and ages. Some girls develop earlier, some later than most. It is perfectly normal.
nothing that pretty big for a 12 year old nice
Yes if they are grown naturally but it is not common.
No. They're larger than the usual bra size.
Age 12-15
Are you sure about this because a 13 year olds breasts would look like a womans breasts
If you show him your breasts he might be scarred for life.
Your body controls the hormones that grow breasts.
There are some females fully grown with same size or even bigger.
with your hands
2
It means you've eaten too much and should get a nice sexy laced bra :)
There is no average size. My niece was a full C cup at 12 yo, while I was still flat. I was 14 before I was a B cup.