'Fifty Shades...' cast warned about using 'overtly sexual' languageLos Angeles, Feb 6 (AZINS) The stars of "Fifty Shades Darker" have been asked to avoid using "overtly sexual" language on social media and in interviews.

According to actress Marcia Gay Harden, who stars in the film as the mother of Jamie Dornan's character Christian Grey, she was reprimanded by movie bosses for her lewd talk, reports dailymail.co.uk.

"We can't talk too much about nipple clamps," Harden told The Sun newspaper.

"I used to send out some naughty little tweets... and I was told by Universal (Pictures) that I couldn't do it any more.

"It is a love story after all -- I don't think they want us being too overtly sexual in interviews," she added.

The film franchise is famous for its sexual tension between stars Jamie Dornan and Dakota Johnson.