Just interested to know how much you dictate about what clothes, make up and jewellery their teens wear. I have friends that seem to be quite strict particularly with their DDs and will insist on choosing clothes with them, that they only wear minimal makeup and only tiny stud earrings if any at all (earrings are chavy apparently). That's not to say that all of them actually obey the rules. They have been known to change clothes or put more make up on as soon as they leave the house.
Personally I'm somewhere around in the middle. I let DD make her own choices and shop for herself and will try to advise and guide rather than dictate. It might not always be to my taste but isn't choosing your own clothes and experimenting with makeup part of what being a teenager is all about.