I am going to approach this matter with caution and brevity, for I certainly do not want to cause anyone to stumble. Several people have inquired whether or not I can verify the claims some people are making that many of the actresses cast in The Passion of the Christ have been involved in pornography. Since the movie's launch rumors have abounded that this is true but few have had it proven to their satisfaction. People ask this question because it seems hypocritical for a woman to play in a "Christian" film about the life of Christ when in her previous role she did pornographic work.
I did some delicate research (keeping in mind my own responsibilities for purity) into this matter and can say with absolute certainty that the following actresses have been involved in activities that constitute pornography. Monica Bellucci (Mary Magdalene), Rosalinda Celentano (Satan), Claudia Gerini (The wife of Pontius Pilate), Sabrina Impacciatore (Seraphia, the woman who offers Jesus a towel), Gabriella Barbuti (one of Herod's Court Women). I am unable to say if they can be considered "porn stars" but can at least verify that they have all appeared in what would constitute "soft" pornography (ie nude photographs and the like). Beyond those women I do not know if any others have appeared in pornography, and frankly it does not much matter. The fact that at least five of the women on the cast of The Passion of the Christ have pornographic backgrounds should satisfy those who are concerned about this.
Further to this, it would be safe to say that the bulk of the cast members, both male and female, have appeared in movies that could not be considered appropriate viewing for Christians. This includes movies based around bisexuality, homosexuality, sexual assaults and occultism. Monica Bellucci, for example, appeared in a movie called "Irreversible" which was vile beyond description, featuring a 10-minute long graphic scene in which she was brutally raped.
I hesitate to provide further information because I do not want to have my site associated with any sort of pornographic content. Unfortunately this just means you will have to take my word for it. Admittedly that may go no further towards satisfying you that the rumors are true, but at the moment I am not willing to go any further on this matter.