Billionaire Ambani wedding festivities included Kim Kardashian, Justin Bieber performance

The lavish wedding between Indian billionaire heir Anant Ambani and pharmaceutical heiress Radhika Merchant took place over the weekend, and it was a glitzy, star-studded affair.

The nuptials took place in Mumbai, India, and comes after months of celebrations and festivities, including Rihanna's first concert in eight years at a pre-wedding celebration.

The international event brought out everyone from Kim Kardashian, singer Nick Jonas and actress Priyanka Chopra to actor John Cena, and Justin Bieber reportedly gave a performance.

A wedding of this magnitude, of course, was detailed, with Merchant telling Vogue in an interview published Sunday that the planning of festivities was a family affair.

"My mother-in-law was the C.E.O. of the wedding, as I like to say," Merchant told the outlet. "It was Nita's commitment and vision that brought our entire celebration to life."

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Here's what you need to know about the grand matrimony of one of the world's richest couples.

Who is Anant Ambani?

Anant Ambani, 29, is the son of India's wealthiest person, billionaire tycoon and Chairman of Reliance Industries Mukesh Ambani, and his wife, Nita Ambani, a former school teacher and founder of the Reliance Foundation. Anant Ambani is their youngest son.

Anant Ambani serves as the director on the boards of Jio Platforms Limited, Reliance Retail Ventures Limited, Reliance New Energy Limited and Reliance New Solar Energy Limited.

Mukesh Ambani and Nita Ambani also have twins, a man and a woman: Akash Ambani and Isha Piramal Ambani.

Who is Radhika Merchant?

Radhika Merchant, 29, is the daughter of Viren Merchant, the billionaire CEO of pharmaceutical firm Encore Healthcare, and his wife, Shaila Merchant. Radhika Merchant, her mother and sister also serve as directors for the company, according to The Economic Times.

What celebrities were invited to the Ambani wedding?

John Cena, Nick Jonas and Priyanka Chopra, and Khloe and Kim Kardashian were among the celebrities seen at the wedding, many sporting traditional Indian garb.

Celebrity stylist Law Roach also made an appearance, as well as Bollywood stars Shah Rukh Khan and Ranbir Kapoor.

Mark Zuckerberg, Bill Gates and Ivanka Trump have made appearances at the couple's pre-wedding festivities, but it is unclear if they attended the official wedding celebration.

Who performed at Anant Ambani's wedding celebrations?

Continuing their tradition of getting rare and long-awaited performances from superstar singers, the couple had Justin Bieber among their pre-wedding performers, according to the BBC and The Hollywood Reporter. It's unclear what Bieber was paid for his performance.

In March, Rihanna performed in Jamnagar, India, as part of the pre-wedding festivities for Anant Ambani.

Why is Mukesh Ambani so rich?

Mukesh Ambani is the chairman and managing director of Reliance Industries, and has a net worth of $116 billion according to Forbes, making him the ninth richest person in the world.

Reliance Industries is a Fortune 500 conglomerate and the largest private sector corporation in India, with businesses in the energy, petrochemicals, natural gas, retail, entertainment, telecommunications, mass media and textiles industries.

Contributing: Brendan Morrow

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