When are you old enough?

When are your daughters old enough to shave? my mom let me shave when i was twelve but my ten year old asked me last night if she could start shaving. she said that all the girls in 5th grade shave except for the losers...she's already wearing a bra-she's starting to develop little skeetie bites as i call them and she says they are sore...me being flat-chested am clueless so went ahead and got her a bra. she's growing up so fast...my little baby....waaahhhhh