Girls are born with vaginas.

Estrogen causes it

Girls don't have to wear bras - many girls do because they feel more comfortable, girls with larger breasts may need the additional support, but no one HAS to wear bras if they don't want to.

The main changes include larger breasts, hair starting to develop around the vagina, periods, and the ability to get pregnant.

There is no normal breast size for any age. Everyone grows at different rates so even if your breasts are bigger than your friends, or smaller than your friends, no one has the average size. I personally would say that 11 year olds would be something around a AA or and A. But if you're bigger or smaller than this, you're perfectly normal too. If you're smaller, you are going through puberty a little later than your friends, and I would be happier about that if I were you! Puberty isn't a very fun time to be honest, and you can tips from your friends so you're fully prepared for the future! I would buy yourself a training bra for now just for privacy when getting changed for PE. And if you're bigger than your size, then don't worry either! You will be the one that your friends look up to and you will be the new expert of puberty out of you girls! I would go and get measured in a underwear store or any women's clothes store if they do it, and buy a bra or 2 in your perfect size. Getting the correct bra size is very important for comfort and breast growth, so always buy the right size!

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Girls reach puberty earlier than boys at the age of 9-12 years. Boys reach puberty at the age of 12-14 years.

Every female fetus is born with the possibility of 300 eggs. By the time she is 35 she has about 50% left and by the time she is 40 she has about 20% left. So it depends on the woman since not all ovulates every month and depends on when they start and stop but in her 20's she should have almost all left.

The average age would be thirteen however menstruation is different for every female.

Genetics

One reason some peoples breasts start to sag even if they are young is it could happen if they don't wear a bra.

The main changes include larger breasts, hair starting to develop around the vagina, periods, and the ability to get pregnant.

Definitely not. Breasts continue to grow slowly all the way through teenage years, and sometimes into early adulthood too. Breasts at these times can be extra sensitive and sore in the mornings, this is just because they're growing and hitting them can be painful, but it will not stop them from growing.

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You can use pads when you're not on your period, but there's little reason to do so - even if in preparation for a period, liners are a more comfortable option. It's not healthy to wear pads daily as it limits air-flow to the genitals so makes the genitals more favorable to bacteria and yeast growth.

Female breasts stop growing and developing by age 18.

shes a woman?1

Just tell her that your bra is starting to feel tight and uncomfortable. She's a woman. She'll understand.

Ask her. It sounds as if she is embarrassed over and dislikes her breasts.

Never. The breast tissue needs to rest from the bra and does not feel good if always pressed together.

No, not at all.

That's something that only the ladies in waiting or her dressmaker would know.

your peroid is very regular

There is no such thing as a "normal" breast size.

Everybody is different and everybody develops at different rates.

Be happy with who you are, whether you think your size is small or large - you are unique and beautiful the way you are.

Getting your first period is part of puberty, but happens at different ages for all girls. You probably started puberty before you got your first period and still got a way to go.

One leads from the bowels, one leads from the bladder and one leads from the uterus !