In October 2018 we chose a movie for you:

Black Swan

Directed by: Darren Aronofsky
Starring: Natalie Portman, Mila Kunis and Vincent Cassel
Year: 2010
Running time: 108 minutes

Plot: the movie is about Nina, a fragile ballerina with great ambition, who is selected to play the main role in the production of Tchaikovsky’s Swan Lake ballet. The production requires a ballerina to play the innocent and fragile White Swan, for which the committed dancer Nina is a perfect fit, as well as the dark and sensual Black Swan, who is better embodied by Lily, the new arrival in the dance company. Nina is overwhelmed by the pressure of the competition for being the main character, which leads her to lose her contact with reality, and eventually to a tragic end, overlapping with that of the character that she interprets.

Sources: https://en.wikipedia.org/wiki/Black_Swan_(film);
By Source, Fair use, https://en.wikipedia.org/w/index.php?curid=28690542