Thank you to the moms who posted and the young women who said she dealt with armpit hair early. My husband & I noticed our daughters armpits had some major B.O. when she was around 3 years old. We asked her ped about it but he said it was no big deal. Since we lived in Texas we just figured it was hot all the time and we just needed to give her a bath or shower everyday. We started using one of those crystal deordorant things and it seemed to help, but she still needs a shower or bath everyday. Well today we found two hairs on her armpit! Thank goodness for Google finding this thread for me! I don't feel as scared since I'm seeing my baby, who will be six at the end of Jan, have her body do something I wasn't ready for. Now I can go to the doctor with more than panic.