Additionally, Lawrence is calling the act racist and sexist, arguing that she pitched a film adaptation to Columbia TriStar (a division of Sony) in 1998 but was sent on her way because she's a woman from the inner city. And then they went ahead and ripped her off instead of working with her. She later sued the studio and the case was settled out of court (which she believes is referenced through the KFC joke). Now that two films have been released, she's back for more -- $20 million, to be exact. Not just for copyright infringement, but also for "breach of contract," "fraud" and "theft."
Lawrence's original experience and book involve a funeral in which she was stripped of her clothes, so I guess she sees her embarrassment as depicted in the nudity of Alan Tudyk and James Marsden in the first and second versions, respectively. The scene also occurs, albeit not so nakedly, in the Bollywood film Daddy Cool, which is another remake of Death at a Funeral. Perhaps Lawrence should add the makers of that to her long list of defendants.
You can see the entire 84-page complaint here.