The 20-year-old Nargis was appeared in the 2009 Kingfisher Calendar has been cast opposite Ranbir Kapoor in the movie. According to rumours, Nargis will be playing a dancer in Rockstar. Imtiaz Ali who introduced Brazilian supermodel Giselle Monteiro in Love Aaj Kal, Now ImtiazAli is all set to launch a New York based half Pakistani.