Mom came up and looked at herself from different angles. And constantly as she looked at herself, she talked about her imperfections - "honey, look how big my butt looks!", "look here, honey, I almost look pregnant with this big belly!," "oh my gosh! I had no idea my roots were showing like this! Why didn't you tell me, honey?!" All this to an 8 year old. I think it's a natural stage for girls (and probably boys too) to judge themselves, and specifically their bodies. Is it really necessary to show them how to criticize their bodies? And if mom is doing it openly, she's showing her little girl that this is the right way to view yourself.
In fact, after mom sat down, the girl took up her mom's example and started criticizing her own body. Mom's response? "
I'm not so experienced in giving girls a positive self image, since my girl is only 2. But I'm pretty sure the example above isn't gonna do it.