I had no idea that we were not the only family to deal with this! It was a long time ago, but dd shaved off one of her eyebrows and one of ds' eyebrows. It was before she was shaving, but my sister was visiting and left her razor in the shower. Dd wanted to try it, and so she did.
I agree they grow back really fast. I tried to get my dc to shave the other eyebrow to at least be symmetrical, but all of a sudden they were scared! Also, no one really noticed. I think they got a couple of "Hmmn, something is different about you, but I don't know what".
lucky single mommy to almost 16 yr old dd and almost 13 yr old ds through 2 very different adoption routes