2000 girls landed on the sets of Rockstar to catch a glimpse of the actor. When Ranbir Kapoor was shooting for Imtiaz Alis Rockstar in Mumbai some time back,the scene which required the actor to walk through a red-light area required about 250 young extras to scream and chant his screen name Jordan as hes playing a rockstar in the film. But when the news that Ranbir was shooting in the area spread,some 2000 girls landed on the sets and started screaming his name Ranbir making it difficult for the shooting to proceed. Ranbir then approached the girls and told them that he would give each of them his autograph if they screamed Jordan instead. Sure enough,the girls agreed to the actors request. And keeping his promise,Ranbir sat down and gave each girl his autograph after the shoot was over!