it does not matter on your age how big your chest is so you cant say "normal" you may just have a bigger chest then others
Yes if they are grown naturally but it is not common.
Yes, it is very normal at 12 years old.
Between 11/12 years old to 15 years old, girls' breasts grow to full adult sizes. Many teens stay at an A-cup for a couple years before the hormones increase breast cup tissue. At 11 years old, an A-cup is perfectly normal.
No. They're larger than the usual bra size.
Mine started growing at 7... Though the most normal age is 13
if you had an erection then its normal its called puberty
There are some females fully grown with same size or even bigger.
no its normal.
depends if your pregnant or not?
12 year old boy and immature are often synonyms. This is pretty normal.
Age 12-15