It could depend on a number of factors, from the weight of the child to genetic factors. Overall, puberty usually occurs a bit later, but there have been reports of girls as young a 5 developing menstruation. If you are concerned, I would recommend speaking to your family doctor.
All I can say is I'm a 13 year old girl and I have plate-like discs in my breasts too, so hopefully that's normal.
Yes if they are grown naturally but it is not common.
No. They're larger than the usual bra size.
Yes, it is normal to see vatiation in your breast size throughout your entire menstrual cycles but especially around ovulation and menstruation. The breasts are not growing or shrinking, the ducts in the breasts are swelling due to the effect of hormones on the breasts.
== == == == === ===
yes i have a 14 year old daughter and i get mad when she sits in front of the mirror and plays with her breasts, girls love doing this. it is perfectly normal
Yes, it is completely normal, especially if you are athletic.
There are some females fully grown with same size or even bigger.
Are you sure about this because a 13 year olds breasts would look like a womans breasts
It is not normal for a 6 year old boy to have pubic hair. Check carefully and seek doctor. It's not normal at all.
If you show him your breasts he might be scarred for life.
Your body controls the hormones that grow breasts.