At what age should a daughter be allowed to wear thong panties and a push-up/demi-cup bra?

I never personally have had any restrictions from my parents on any underwear that I wore, but I know some parents take this very seriously and do maintain restrictions on it. But to what age can you really control that? ... and should it be controlled?

For this discussion, thong underwear would include g-strings, t-strings, etc.

I included one picture with the thong panties showing because I know that is one of the arguments against them but I think that is very rare for that to ever happen. Is it a big deal if it does? Why do some parents consider them slutty?

Are push-up bras considered slutty as well?

What restrictions would you insist upon for your daughter and what restrictions did you have from your parents?

What are the arguments against wearing either one?

If you're a guy and your parents have restrictions on thong underwear for you, or you just want to comment on it, feel free to chime in.
A. My daughter would not be wearing thongs or push-up bra's until she moves out on her own! Modesty in dress is, or will be, the rule in this house, whether over, or under
B. I will allow my daughter to wear them, but only after the age I am putting in my comments
C. She can wear thong panties as long as they are not showing, but not a push-up bra as that is too outwardly obvious
D. I have no problem with a push-up bra but for the thong panties she will have to be over a certain age first (see comments)
E. I would have no restrictions on her wearing whatever she wants to, it's just underwear... let's get real!
F. I have never had any restriction from my parents. I can wear any underwear that I want. I really don't think there should be any restrictions
G. OTHER, see my comments below, or just open the underwear survey
Select gender and age to cast your vote:
At what age should a daughter be allowed to wear thong panties and a push-up/demi-cup bra?
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