Do Tell by Lindsay Lynch

As character actress Edie O'Dare finishes the final year of her contract with FWM Studios, the clock is ticking for her to find a new gig after an undistinguished stint in the pictures. She's long supplemented her income moonlighting for Hollywood's reigning gossip columnist, providing salacious details of parties and premieres. When a young starlet approaches her after an assault by an A-list actor at a party, Edie helps get the story into print and sets off a chain of events that will alter the trajectories of everyone involved.