They should use a real ballerina for the starring role in this movie
Dakota Johnson is just an actor, why not get a real ballerina for the role?
This girl, ballerina Rachelle di Stasio, is gorgeous and has a lot of personality. Watch the video below. They can save a lot of money since they won't have to do any cgi head replacements to make her a believable dancer(think Natalie Portman).
Or perhaps they could cast her as another American attending the dance academy (Dakota's Friend). I have no idea if Rachelle would want to be an actor, but she definitely has star potential.
If you watch the video below you will see what I mean.
Go to 1:57
https://vimeo.com/78962321
http://photo2hub.blogspot.com/2013/12/20x24-ballet-with-douglas-dubler.html