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You may need to bite the bullet and just get her one of the starter bras available in most major high street stores. They do all tend to be padded which increases the boob size and is ridiculous but it's better than their nipples protruding through their clothes. M & S do a nice range but I've also found some ok ones on amazon.
Agree with sausage. My 11.7 DD has, in the last couple of days, gone past pointing and started to develop definite circley bits around her breasts. She was reluctantly (due to the heat) wearing t.shirt material short vest type things and has now decided that proper bras (28aa) are better. They honestly don't increase the size of her chest. They came from either Marks or Debenhams and, unfortunately not available in Malaysia.