you can see your boobs through your shirt and they hurt when you run, ect.
you can wear a bra with out it being noticed by wearin a big jacket
Some signs that you need a bra are that your breasts are growing, if you notice things changing go ahead and start with a training bra. If your chest or shoulders hurt when you run or participate in gym, you need a bra.
It is not a good idea really because if a guy notices you for this and then sees you without any stuffing he will get a shock and not look at you again. Just use a bra that gives you comfort and be natural and a guy will notice you for who you are.
Men are hard-wired to look at / notice/ stare at breasts and nipples in almost any circumstance or surrounding.
Once you start to notice your breasts when wearing just a plain white shirt, you should start out with a training or sports bra. Once you are comfortable with those and your breasts are large enough to fill a cupped bra then try an A cup.
Your time will come, until then you can wear a padded bra or if your desperate you can stuff a small bra just don't try to go too big too fast because someone will notice.
Well it can be at any age. You should ask her to wear a white t-shirt and if you can see a nipple or Breast showing tell her. Also if she says they hurt or if you notice them bouncing around get them a bra. Also if you should get a padded bra from pink by 5th grade
the only way is to tell her or ask her when she first started to wear bras
Either they are too lazy to get clothing that fit and put on a bra. They don't notice. Or they want people looking.
If the bra is not the right size or fitted right, then it can be extrememly uncomfortable. I personally, have a few bras that I hate wearing, mostly because they aren't the perfect fit. It is advised to go and get a bra size fitting (at Victoria's Secret, they do it for free). Once you find the right size and right bra for your body, you won't even notice you're wearing one!
There is no set guideline on when you should start wearing a bra. but you could start wearing a training bra when your breasts start to develop. If you are unsure when that is, you will notice the nipples and breast start to raise and you might notice the areola (the area around the nipple) begin to get bigger. When you see those changes, called the breast bud stage, you should ask your mom about getting a training bra. If you don't wear a training bra at that stage, you can start wearing one when the breast itself starts to develop and get bigger. Sometimes, it's hard for moms to talk to their daughters about this, so you should let your mom know when you start seeing the changes described above and ask her if you can start wearing a training bra.
I think it is best to start with a trainer bra when you start seeing your nipples throw your shirt. Anytime after that you should start trying on cup bras and see if anything fits if not try again once you notice change.