Rita Ora has teased that 50 Shades Of Grey fans are in for a "shock" when they see the film.
The Radioactive singer plays Christian Grey's adopted sister Mia in director Sam Taylor-Johnson's movie, and hinted to MTV that the finished film might surprise people.
She said it was "gonna be the biggest and most amazing shock ever", adding that she's "so excited" for it.
Rita also admitted that she battled her nerves after being cast alongside Jamie Dornan and Dakota Johnson in the steamy adaptation of EL James' book.
" Oh, I was nervous because it was the first time I ever did a movie with words," she said. "But it was so nice. The director Sam, she was incredible, so it was all love."
Rita, 23, recently shared a photo of herself while in Canada to make the film, and fans assumed it was of her in character.
But she has now told E! News that she will look completely different when she plays Mia.
"It's a surprise. Hopefully you won't recognise me," said the singer, adding: "It's sexy!"
Fifty Shades Of Grey is set to be released on February 13, 2015.