I recall hearing about, and then seeing, the scene in question starring Barby & Franklin. I didn't know there was more than one. (Oops--just checked IAFD--I do remember seeing her in more stuff now, after originally posting that I thought she didn't work very much.) Reminds me of the hype concerning the other "sisters" mentioned elsewhere here.

As far as I know it, the incest rules basically state that siblings can be in the same scene or photo shoot but cannot be touching each other in any sexual way. Anything more severe (parent/child in particular) is completely unacceptable, consenting adults or not. That said, I just received a set of a grandmother/mother/daughter team.