I think I was 12 when my mom finally let me shave. I should have started much sooner. I had long hair in my armpits by 5th grade (yes, long, inches long!). I was freak show at school. It was so embarrassing. I will not let my dd go through that! It's not an age thing, it's a hair thing, when it starts growing, it's time to shave! My mom only gave in because we had to swim in PE starting in 6th grade and I made her look at my hairy armpits!