Going WAY back....
Ginger Lynn and Traci Lords reportedly hated one another. I recall reading an article that stated the rivalry got so bad that one of them (Ginger I believe) refused to show up at the New Wave Hooker premier because the other was going to be there.
And judging from some stuff they did in a movie, Christy Canyon and Traci both seemed to be rather un-fond of Stacy Donovan.
Lois Ayres and Keli Richards also had a prett good on that allegedly led to a scene right out of a JM movie.
That one may take a while....