The Ambanis will be surrounded by family, friends, and a who's who of business, entertainment, politics, and sport.
The star-studded affair will kick off with a "Shubh Vivaah," a traditional Hindu wedding ceremony held around a fire, according to a leaked wedding invitation seen by news agency Asian News International.
This will be followed by a "Shubh Aashirwad" or "divine blessing" ceremony on Saturday, and the wedding concludes with a reception party or "Mangal Utsav" on Sunday.
It's expected to be held at the Jio World Convention Centre and the Ambani family home in Mumbai called Antilia.
Here are some of the stars attending and invited to the wedding.
John Cena
John Cena poses for photographers at Anant Ambani and Radhika Merchant's wedding on Friday.
Hindustan Times/Getty Images
Hollywood actor John Cena arrived for the wedding wearing a light blue Indian outfit called a "Salwar Kameez."
Priyanka Chopra and Nick Jonas
Priyanka Chopra Jonas and Nick Jonas attend the Ambani wedding on Friday.
Francis Mascarenhas/Reuters
Priyanka Chopra Jonas wore a gold lehenga while attending the wedding on Friday with Nick Jonas, who donned a light pink sherwani. The couple has spent time with the Ambani family, including in December 2018 when they attended Isha Ambani's wedding.
Kim Kardashian and Khloe Kardashian
Khloe and Kim Kardashian attended the wedding in Mumbai on Friday.
MEGA/Getty Images
Kim Kardashian and sister Khloe Kardashian shared photographs and clips on their Instagram Stories after arriving in Mumbai on Thursday and are rumored to be attending.
Their outfits were designed by Manish Maholtra, who shared pictures to his Instagram account on Friday.
Law Roach
Law Roach scored an invite to Radhika Merchant and Anant Ambani's wedding in Mumbai.
Francis Mascarenhas/Getty Images
The celebrity stylist was included on the star-studded guest list.
He previously mingled with the Ambani family in April 2023 when he, Zendaya, and Tom Holland attended a gala at the Nita Mukesh Ambani Cultural Centre.
Nicky Hilton Rothschild and James Rothschild
Nicky Hilton Rothschild and James Rothschild posed for photos in Mumbai on Friday.
Prodip Guha/Getty Images
Nicky Hilton Rothschild attended the lavish ceremony with her husband, James Rothschild.
Shahid Kapoor and Meera Rajput
Shahid Kapoor and his wife Meera Rajput pose together at the wedding ceremony on Friday.
SUJIT JAISWAL/ Getty Images
Bollywood celebrities have been prominent on the guest lists of all the pre-wedding and wedding events.
Shah Rukh Khan and his wife Meera Rajput arrived in Mumbai on Friday for the wedding weekend, according to the Indian outlet Mint.
Actors including Deepika Padukone, Ranveer Singh, Shahid Kapoor, Jhanvi Kapoor, Vidya Balan, Alia Bhat, Ranbir Kapoor, have been featured in official photos of the pre-wedding events.
Gianni Infantino
Gianni Infantino attends the wedding with his wife, Leena Al Ashqar, in Mumbai on Friday.
