Hmm, I would run this particular release past an attorney. It has a line reading "I hereby state that if I choose to engage in an sexual act while performing as a paid model, it will be for my personal enjoyment" which (apart from the typo) is a baldfaced lie on the face of it (the model is posing for money), and in some jurisdictions to accept money to perform a sexual act for the enjoyment of someone present is a sufficient definition of prostitution. It is the fact that the sex is NOT being performed for the enjoyment of anyone present that allows for the veil of First Amendment protection.