It's been a long time (there's been a thread on giantess city for months) but IIRC, it was something Jena Sims posted on her twitter about being topless and/or nude in the movie. There were also script pages leaked. And I don't remember where I heard it about Olivia Alexander, it may also have been on twitter. I can't look it up right now because I have very little patience for mobile web, but if you wanna know more I'll get back to ya in about five hours.
Or you can dig through the gc thread for answers.
EDIT: Or better yet. Here's all the proof you need. Apparently there's a safe-for-TV version and a not-so-safe one...
http://collider.com/roger-corman-att...ic-con/180741/