I think you're on to part of the basic principle. But what 2257 is really all about is just being able to prove that the girl is of age. When shooting videos of average girls that no one would know from anyone else you need to have your papers tight, but something like Paris Hilton, Pamela Anderson and so on it's not like that. That is because it's all about being able to prove age, now if the girl is unknown and you don't have documentation how do you easily prove she is of age. Well you call, she moved, phone number changed, bla bla bla, the police don't know who she is, so it's your word against theirs if it's suspect. However with a celebrity of public figure age is easily attainable because of the persons star status so it's technically a violation of 2257 but it wouldn't hold up because age is easily verifiable on a star.
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