I try not to be obvious about it but I have and it has helped. My daughter has a friend that is endowed. She had too much hanging out and I was looking at a catalog and commented on how the girl looked so nice and her shirt was a little higher than normal. It seems to be the fashion to let it all hang out.
We got to talking about that and she said she was tired of the fad and I pointed out to her that if she did not care for it, she should not do it. Be a style setter. She now wears a little more up there and does not show cleavage to the world. Her mom thanked me. She had been trying to get her to cover up more.
I told her that I just told my daughter that she was not going out of the house with things hanging out and if she didn't like it, tough. It is called parenting. I think they bith like this new concept.