It seems she heavily attached herself to it because she obviously felt it would give her a lot of publicity. Though, that is quite interesting she would wait two days before the film is released to announce it as a "blink and you’ll miss it" role. Unless a lot of her scenes were cut out at the last minute and she didn't know about it. Hmmm...
@FiftyShades London premiere tomorrow! It’s a blink and you’ll miss it role,but I’m so happy to be part of it!
— Rita Ora (@RitaOra) February 11, 2015
Thoughts?