 After Aishwarya Rai (qv) turned down the part of Jwala,  Rani Mukherjee (qv) was given the script to read and consider  taking over for the part of Jwala. However Rani liked the character  of Heera so much that she asked if she could play her instead. The  part was much smaller at the time, but changes were made to the  script to give her character more storyline.