'He (Ranbir Kapoor) has shaped up so well in his career so far and with such ease and rapidity. Cannot imagine he was assisting Sanjay Leela Bhansali as an AD (assistant director) on 'Black',' Amitabh posted on his blog www.bigb.bigadda.com Monday.
'He and Sonam Kapoor were assistants on the set together. And now look at them. Big stars in their own right. Feels so wonderful to watch how this generation grows and accomplishes itself,' he added.