The last leg of Ponniyin Selvan promotions took place in Delhi. The film, which is touted to be one of the most expensive Tamil projects, was shelved twice. Also, did you know Rekha was the first choice for Aishwarya Rai Bachchan's role in the film? Here are some lesser-known facts about Ponniyin Selvan that you must note before the film releases on September 30.