Oh boy, do I know what you are going through. One of my daughters started "rounding out" at 8 years old. We couldn't figure out what was going on, because honestly, I never thought of puberty happening so early. I was 12 when I started, so I assumed she would follow the same genetic pattern.
Well, we had the same symptoms as you-hairy legs, odor, etc. Then she came running to me one day last year all upset. Here she was spotting already! I took her to her pediatrician who tested her endocrine system,(I think) and sure enough, it was early puberty.
The Dr. said that the AMA is going to revise the puberty ages down to 8 years old, because this is becoming quite common.
We have a battle finding clothes that fit her without looking frumpy. Everything is so narrow fitting, and she has hips and curves! She looks overweight, but we keep telling her she needs to wait until she gains height to even out.
Kids at school teased her about her legs, and she begged me to let her shave. My first reaction (for a long time) was to say no, because it's so young. So she stopped wearing shorts, hated gym class, wanted to quit swimming because she didn't want to show her hairy legs.
But...she is going through something her peers are not, and that merits special consideration. I had to lighten up and let her shave. Her self-esteem went up a bit, so it was worth it. I figure of all the battles we are going to have, that one just wasn't important. And she is going through enough. Emotionally this is tough at this age.
We have had our share of tears. This has not been easy. She is having the mood swings and crying jags, too. I just wasn't prepared for this-I still looked at her as a little girl. I have had to change my way of thinking, because doing things the way my mother did by us isn't going to work in this case. I still have to catch myself.