hi, i am the mother of a 19 year old daughter so i have been thier and done that. I was a late bloomer myself, accually i never got breast until after i had children then the bloomed, but my daugher on the other hand well lets say she bloomed very early, accually when she was 10 she tried on my wedding dress, i was 19 when i got married, anyways she was already getting breast she could not even zip my dress on up over her chest area, she did fine to the waist but after that nope no luck, so what i am tring to get too is i think all girls develope at diffrent ages, it may be time for a training bra, ewwwwwwww bad thing to think but if she is developing then maybe it is time, I hope i helped you out some but i would not be worried about it too much sounds like your little girl is growing up faster then you wanted her too. Also i will tell you that i have a niece that has been wearing trining bras since she was around 8 she is 10 now. sincerley T.