MrsRickman - this contravenes all kinds of guidelines, and you need to complain (anyone who has seen this can complain, not just you and your DD, so come on MNetters!):
First of all, to the ASA who regulate anything like this:
www.asa.org.uk/Complaints-and-ASA-action/How-to-complain.aspx
Second, to Facebook themselves, because this is also in direct contravention of their code of practice and promotional guidelines:
www.facebook.com/help/?page=858#!/help/contact.php?show_form=ad_report
By the way, Facebook's own guidelines prohibit any promotion which is marketed to those under 18 (so CC have already broken that one by making it open to 14 year olds), and anything that is pornographic or has sexual content likely to offend.
And finally, to Coca Cola themselves (that brand manager should get into a whole heap of trouble - its their job to check what's being done in their name, and saying it was a 3rd party is absolutely unacceptable and irrelevant if it was a 3rd party hired by them, which in this case it is. I'd personally go straight to the top - the European President is:
Dominique dot Reiniche at coca-cola dot com (I think). There is also contact us site here :
www.coca-cola.co.uk/contact-us/