The couple are due to get married in July, but the celebrations are already underway.
At the cocktail party, the bride wore a bespoke gown from Atelier Versace, the luxury label’s haute couture division.
A similar dress was made for Blake Lively to wear to the Met Gala in 2022. It was previously on display at Kensington Palace in London.
The daughter of former US president Donald Trump posed for photos with her husband, Jared Kushner, and their daughter, Arabella.
Her dress featured cut-out detailing on her midriff and had alternating gold and silver diagonal stripes.
Her husband went for a simple black buttoned-up bandhgala, while Arabella wore a glittery blue gown.
Nita Ambani, Mukesh Ambani’s wife, wore a maroon sari that featured colorful button detailing down the side.
Natasha is the wife of Adar Poonawalla, the CEO of Serum Institute of India, a vaccine manufacturer.
Adar previously said he fled India because of threats against him during the COVID-19 pandemic.
The two Bollywood stars attended the cocktail party with their son, Taimur Ali Khan.
Saif Ali Khan paired his pinstripe black suit with a purple shirt while his wife donned a pearl-covered sari.
The Microsoft cofounder was photographed with Anant and Mukesh Ambani.
Gates opted for a blue suit, while his wife wore a black gown that featured gold detailing at the shoulders.
Nita Ambani joined forces with the Gates last year when her Reliance Foundation and the Bill & Melinda Gates Foundation announced an initiative to support 1 million female entrepreneurs.
The Facebook founder’s black suit featured embroidered dragonfly motifs, while his wife’s dress was embellished with gold beads in the shape of two roses.
The singer, who was joined on stage after her performance by the Ambani family, performed her set barefoot. She also wore pink mesh leg warmers that matched her pink jacket.
Rihanna was seen dancing at the afterparty with fellow guests wearing the pink ensemble.