I just took my little sister, who will be 11 the end of July, bra shopping last Sunday. She was WAY too imbarrased to go with our mom so I offered. She started out wearing the cami type bras, like a tank top with a shelf bra built it...those worked fine for awhile, until she started to develop more, now she is in a "real" bra. You said your daughter isn't developed yet; I would say that if she wants to wear a cami bra then let her. Really, it's like a tank top, with a shelf bra. To her it will be like a bra and to anyone else, will look like a tank top! This will hopefully promote a good habit of wearing a bra and as soon as she does start to develop she will be comfortable with something "constricting" her so to say, in that area. A bra is a hard thing to get used to when you have never had to wear one before, so I think starting early will help. I think explaining to her that she really doesn't need one, but you will let her wear one to get her used to the feeling might be a good approach. Either way, I don't think a cami bra will hurt! Good luck!