Why, oh WHY?

This morning on 100.3 The Peak, some lady seemed shocked at a couple who had just recently bought their thirteen year old daughter a training bra. She thinks that the parents should have bought the training bra years ago for their daughter. In fact this lady said that she was going to buy her own daughter a training bra when she turns 9 because training bras are meant to get girls ready for wearing regular bras. I found this to be ridiculous. They are meant for when girls' chests start to pop out a little, but have yet to develop into a cup size. This lady should know that girls' breasts develop at different ages, not at a "one age fits all" rate of development. I mean we don't simply give girls tampons and pads to "train" with; they are given when a girl has reached the point of her first period (which also comes at different ages). Diversity does not just come in culture, it also comes in puberty.