British Pop Sensation Rita Ora to be Christian Grey’s Adopted Sister in ‘Fifty Shades of Grey’ Movie

Christian Grey now officially has a sister! Rita Ora, British pop star, has been chosen for the role of Mia, Grey's adopted sister in the movie adaptation of 'Fifty Shades of Grey.'

The 23-year-old singer confirmed the news to her fans on Twitter. "It's official! I've been cast in @FiftyShades of Grey as Christian's sister Mia. #FiftyShades," she wrote.

For Rita, this will be a big chance to impress people with her acting skills. The singer was recently  seen at the British Fashion Awards flaunting her cleavage in a strapless sequined gown.

The much-awaited movie, 'Fifty Shades of Grey,' will see Jamie Dornan as the hot Christian Grey and Dakota Johnson as Anastasia Steele. Jennifer Ehle of 1990s BBC adaptation of 'Pride and Prejudice' will play the role of Anastasia's mother, Max Martini will be Christian's bodyguard Jason Taylor, and newcomer Eloise Mumford will be Anastasia's roommate, Kate Kavanaugh.

Jamie and Dakota have started filming for the movie in Vancouver, Canada. The two were seen sitting in a cafe and (maybe) checking out each other.

According to Variety, 31-year-old Jamie is best known for his roles in the ABC series 'Once Upon a Time,' and BBC crime drama 'The Fall.' He also starred in Sofia Coppola's 'Marie Antoinette.' He is married to English musician Amelia Warner.

Dakota started her acting career as a child artist. She was first seen in the movie 'Crazy in Alabama' in 1990. In 2006, she was voted Miss Golden Globe and the same year she signed with IMG Models. She made her television debut in Fox series 'Ben and Kate,' that went off air just after season one.

However, with the brand name, newbies like her and Rita have got a golden chance of proving themselves in the acting field.

The author of the best-selling erotic novel, EL James, is also excited about the movie. "I've been terrified from the moment I published the book," James, 50, told Entertainment Weekly. "You don't expect this kind of success. Even now it floors me. My only ambition for the books was to see them in bookstores. This is huge. And there is this passionate fandom. We need to get this right for them."