Sharon Stone has rounded out the cast of James and Dave Franco’s New Line comedy “The Disaster Artist,” sources tell Variety.

Zac Efron, Seth Rogen, Josh Hutcherson, Jacki Weaver, Hannibal Buress, Ari Graynor and Andrew Santino are also on board. James Franco is also writing and directing.

The film takes an in-depth look at the making of the 2003 cult classic “The Room” — hailed by many as one of the worst movies ever made. James Franco will play director Tommy Wiseau while Dave Franco will play Greg Sestero, who co-starred in the film. Theaters across the nation still play the pic in midnight showings.

Stone will play a Hollywood agent. Production is currently under way in Los Angeles.

The pic is written by Scott Neustadter and Michael H. Weber based on the book by Greg Sestero and Tom Bissell.. Good Universe is producing “Disaster Artist” along with James Franco and Point Grey Pictures principals Rogen and Evan Goldberg.

Stone starred on TNT’s just-canceled action series Agent X and has the indie drama “Running Wild” in post. She is repped by Gersh and Binder & Associates.

The Hollywood Reporter first broke the news.