Rita Ora Grammy's 2014
Singer Rita Ora at the 56th annual Grammy Awards in Los Angeles, California on Sunday. Reuters

Actress Rita Ora has faith that the “Fifty Shades of Grey” film adaptation will be hit.

Less than one week after wrapping the highly anticipated erotica film, Ora dished on the feature, in which she plays Christian Grey’s younger, adopted sister, Mia Grey. According to the 23-year-old British singer, despite the film's risqué nature, it will be a huge success.

“I know everybody’s going to watch it. Whether it’s in secret or confidence, but everyone’s going to watch it,” Ora told Capital FM via UK's Metro. She went on to promise that the movie, based on the best-selling E.L. James novel of the same name, will be “amazing.” “It’s such a great, passionate movie… It’s going to be fun,” said Ora.

E L James
E.L. James, author of Fifty Shades of Grey, poses for photographers during a book signing in London, Sept.6, 2012. Reuters/Neil Hall

Ora’s confident remarks follow reports that the initial book in James’ “Fifty Shades” trilogy, "Fifty Shades of Grey," published in 2011, recently reached a milestone of selling 1 million copies. According to a report from the New York Times Wednesday, the American publisher for “Fifty Shades,” Vintage Books, has since confirmed the record-breaking numbers. The novel, which started out as online “Twilight” fan fiction, follows the story of a BDSM-practicing billionaire businessman named Christian Grey and his relationship with his virginal lover, Anastasia “Ana” Steele.

Ora last spoke about the “Fifty Shades” film in January, calling her experience on the set a success. “I was nervous because it was the first time I ever did a movie with words,” Ora told MTV News at the annual Roc Nation pre-Grammy brunch in Los Angeles on Jan. 26. The actress later shared kind remarks about working with the film’s director, Sam Taylor-Johnson,. “She was incredible, so it was all love,” Ora said.

The “Fifty Shades of Grey” movie wrapped filming last Friday after three months of production in Vancouver, Canada. The film is currently scheduled for a February 2015 theater release in the U.S.