Despite a release date that’s just three weeks away, none of the stars of “Fifty Shades of Grey” have seen the much anticipated movie.

That’s according to Marcia Gay Harden, who plays Christian Grey’s mother, Dr. Grace Trevelyan Grey.

“The director is letting the cast see the movie but not right now,” Marcia told Access Hollywood on the red carpet at the Artios Awards in Beverly Hills last night.

“I’m going to see it right before the fans do… but this is a movie that is protected,” the 55-year-old actress explained. “It’s like they’ve got a chastity belt around the movie itself.”

As fans of the books know, Grace isn’t Christian’s biological mother, but rather the woman who took him in after his birth mother passed away.

Though it’s not frequently discussed in the erotic novel, Marcia says her character definitely approves of Anastasia Steele, her son’s girlfriend.

“Mama Grey loves her!” she raved. “She is really, really smart … very refined, very elegant and I think she loves that there is this wholesome girl for Christian. I mean she has probably seen him with a lot of uptight little blonde types.”

“Fifty Shades of Grey” hits theaters February 13.