 Global celebrities, business tycoons and politicians are arriving in India's financial capital to attend the wedding of the youngest son of Mukesh Ambani, the world's ninth richest man. Anand Ambani is marrying his longtime girlfriend Radhika Merchant in what many have dubbed the wedding of the year. The celebrations in Mumbai are the culmination of months of wedding events that featured performances by pop stars Rihanna and Justin Bieber.