Brand New Cherry Flavor by Todd Grimson, 1996

In the world of Hollywood's panderers, philanderers, has-beens, and sycophants, aspiring screenwriter and director Lisa Nova considers herself a rising star who can transcend the lies, cheating and hypocrisy for the sake of her art. When she is coldly betrayed by one leering producer too many, she turns to Boro, the enigmatic leader of a local biker gang, to exact vengeance - and she gets more than she bargained for. It begins with the strange tattoos that appear overnight on her skin like stigmata, followed by the hallucinations of ancient cults of the undead. Lisa soon finds herself contending with white jaguars and cannibalistic demons rising from the grave, zombie-bikers, voodoo priests, transsexual drug dealers and corrupt movie folk while the lines between dreams and reality quickly dissolve.

https://www.goodreads.com/book/show/11445769-brand-new-cherry-flavor