Black Swan
Portman plays Nina Sayers/The Swan Queen, in the 2010 drama Black Swan. The film depicts the life of a young New York ballerina, her controlling mother, and the pressures of her industry. Nina tries to make sense of things as she is consumed in a life full with jealousy, lust, and rivalry.
It was about a year of ballet preparation that sort of ramped up as the film got closer. It started out for a couple of hours a day, then five hours a day, then more like eight hours and it was very intense but really fun, too.