Anant Ambani and Radhika Merchant on July 5 at their sangeet.SUJIT JAISWAL/Getty ImagesAnant Ambani and Radhika Merchant held their sangeet, a pre-wedding celebration, on Friday.The event featured a star-studded guest list and a performance by Justin Bieber.The couple's wedding ceremony is from July 12 to July 14 in Mumbai, India.The wedding of the year has almost arrived.Radhika Merchant and Anant Ambani, the youngest son of Asia's richest man, will marry on July 12 at the Jio World Convention Centre in Mumbai.