The link you provided doesn't count. First of all, it's on a humor site, and the article definitely seems to belong there. But more importantly, it provides no evidence that the models are underage, the photos it shows don't appear to be me to be of underage girls, the photos aren't quite pornographic anyways (though admittedly fairly close), and it doesn't even provide any evidence that AA attempted to represent them as underage.
I'm completely willing to hear that AA is making child porn--I have no affiliation with them or anything like that--but you haven't provided any evidence and therefore you shouldn't make the claim.