Rita Ora has teased fans of the Fifty Shades of Grey franchise by telling them to expect "the biggest and most amazing shock" as EL James' erotic trilogy is given a movie transformation. The film, which is currently being shot in Vancouver has experienced plenty of delays with its casting and filming but if Rita's words are anything to go by, it should all be worth it upon the 14th February 2015 release date.

Rita Ora
Rita Ora Is Loving Her New Role In The '50 Shades' Movie.

The 23 year-old pop star, who has been cast in her first speaking movie role as Christian Grey's sister, Mia, said she is "so excited" about the movie and that the release is "gonna be the biggest and most amazing shock ever."

"Oh, I was nervous because it was the first time I ever did a movie with words. But it was so nice. The director Sam [Taylor-Johnson], she was incredible, so it was all love," beamed Rita, via Metro.

Dakota Johnson
In Just Over A Year, The '50 Shades' Movie Will Have Been Released.

Starring Jamie Dornan and Dakota Johnson as the fictional lovers who foster a sado-masochistic relationship, the movie apparently will not be as sexually explicit as James' novels which may disappoint some fans. Producer Michael De Luca explained that the makers were trying to avoid anything "gratuitous" and reassured that the main themes of the story would be upheld.

"We're very conscious of not making anything gratuitous or exploitive while being faithful to the stories of the book and the fans of the book," De Luca said, via Digital Spy. He added: "We're going to give them what they expect, which is an intense and erotic love story. Obviously the film can't be as explicit as the book."

Jamie Dornan
A New Poster Featuring Jamie Dornan As Christian Grey Has Been Released.

Rita's intriguing words coincide with the first real evidence that progress is being made: a movie poster featuring Dornan as Grey has been release. The teaser poster shows the suited Grey looking out from a skyscraper over Seattle with the words "Mr Grey Will See You Now," referencing the scene in the story where Christian and Ana meet for the first time.

This is great news for fans after last week's reports of mayhem on set which included an old guy protesting about the filming by shaking a cowbell every time "action" was yelled. Nevertheless, that vital chemistry between the two leads is said to be as strong as ever. "The chemistry is there, they genuinely like each other," De Luca revealed to E!News. "They're enjoying the story, the story is so powerful."

Fifty Shades of Grey will be released on the 14th February 2015.