I started in 7th I had my cousin of the same age teach me. I became a cheerleader that year too. I wasn't really hairy, but I still had hair on my legs and I was wearing those skirts. A lot of girls at my school in same grade were already shaving, wearing thongs, and coming to school with cake face makeup. I felt embarrassed/behind so I start shaving.
I agree with everyone else whenever they get hairy.
I started in 6th grade and I just didn't tell my mother but if I have a daughter when she is 11 I would give her a lesson on how to do all those girlie things like what to do when you have a period, how to shave properly, deal with BO, getting boobs etc.. so then by the time she feels she needs to shave her legs she knows how and will hopefully feel comfortable talking to me about that stuff.