Rihanna, Bill Gates and Mark Zuckerberg were among the world's most famous people to attend a pre-wedding bash hosted by Asia's richest man.
Mukesh Ambani has organized a three-day festival in India for his son Anant Ambani, 28, who is set to marry his 29-year-old girlfriend Radhika Merchant in July.
The elder Ambani is the chairman of India's Reliance Group and has a net worth of $114bn (£90bn), according to Forbes.
He held a singing and dancing party at his resort in Gujarat.
Unverified reports said that Rihanna was paid £5 million to perform at the concert, which was her first time performing in India.
Ivanka Trump also attended the ceremony, along with a number of Bollywood movie stars such as Shah Rukh Khan and Salman Khan.
around 1200 guests Celebrations enjoyed – Authorities said nearly 130 flights landed at a local airport, which was temporarily granted international status for the event.
Anant is a director at the new energy company Reliance and one of Ambani's three children who are heirs to his empire.
His fiancée is a director at Encore Healthcare in India.
The family also made headlines when Ambani's daughter, Isha, married in 2018 in an event described by some as a mini-Davos summit.
Guests of the last party enjoyed 500 dishes prepared by about 100 chefs, and were pampered by hair and makeup experts.