My daughter has just started in Year 5 but only just turned 9 at the end of the summer holidays. She told me today that 'most' of the girls in her class are now wearing bras, and she feels embarrassed to be the only one not wearing one. Can this be right? I don't remember wearing a bra until I was at least 12, and even then I'm pretty sure I didn't really need one! Is puberty really starting that much earlier?