I say teen, she's 12.
Where do you all get your teens bras?
I measure her to probably be a 28C or B and I can't find anything like that for her.
We went out today for first bras for her as she's been in crop tops until now. Admittedly we just went to the nearby retail park, so ASDA, Mataram, Next. But all they had were 30' and up and the only 28' were AA. We've come away with 30A as the best we could do with the choice, but (without traipsing everywhere) I'd like to try something 28' with a B or C cup.