Jaya Bachchan has organised a mega bash Wednesday to ring in her husband, Bollywood megastar Amitabh Bachchan's 70th birthday. But actors Ranbir Kapoor and Priyanka Chopra will not be attending the big bash.

Big B turns 70 Thursday.

Both the actors are rooting for their film "Barfi!" at the ongoing Busan International Film Festival (BIFF). It has been chosen in the Open Cinema Section.

When contacted, Priyanka's spokesperson told: "Yes, Priyanka is currently at the Busan International Film Festival with Ranbir rooting for 'Barfi!'".

The nine-day film festival will end Oct 13.