Breasts start to develop during your pre-teens and teens as you go through puberty, then into your early twenties as fat distribution changes breast size can increase in size. As an adult breast size can also change with weight changes, hormonal changes, pregnancy, and breastfeeding.
No. God has a plan for everyone. God had a plan for your sister and her breasts is part of it. Besides, who really cares how big your of your sisters breasts are? What about your straight A's or your backflip in gymnastics?
It depends what age you are, but im a young teenager and my breasts are about the size of a coconut
We can grow big breasts by doing sex with other boys because they suck our breasts.
It depends mostly on the size of the breasts in relation to the size (height and weight) that she is. Also, age and body type factor in a little bit, too.
there isn't a specific size---it all depends. Everyone develops differently
Possibly
BIG
A cups are considered small. But taking note of your age, it's not that big a deal too. Fact is, your breasts will continue to grow.
Every girls breast are different. The size usually runs in the family. If your family members have larger breasts then you will most likely have larger ones too. Breasts start to develop when puberty hits. Puberty can start between the ages of 11 to 16 some times earlier sometimes later. If you have small breasts now, they could grow bigger. Don't think there is something wrong with you if you have small breast at your age or any age. everyone is different.
Its got nothing to do with you. She is about a size 10-14
Female breasts stop growing and developing by age 18.
as big as God intends