Indian billionaire Mukesh Ambani’s youngest son Anant Ambani is all set to tie the knot with Radhika Merchant on July 12. The pre-wedding festivities have kickstarted already, with the sangeet ceremony held on Friday night. The star-studded affair witnessed a slew of Bollywood celebs and an electrifying performance by singing sensation Justin Bieber. However, what stole the show was a special performance by the entire Ambani clan.