For love or money.
The world's richest and most powerful people are partying in Jamanagar, India, as part of a 3-day, $120 million party to celebrate the impending wedding of billionaire Anant Ambani and his wife. future wife Radhika Merchant.
Ambani, 28, is the youngest son of India's richest man, Reliance Industries chairman Mukesh Ambani, who has a staggering net worth of $116.8 billion.
The businessman spared no expense on the extravagance, inviting 1,200 wealthy elites from around the world to attend.
Ivanka Trump, Jared Kushner, Bill Gates, Mark Zuckerberg and Rihanna all came out for Friday's launch festivities, chatting with equally well-heeled guests.
Trump, 42, looked dazzling in a silver and gold sequinned dress as she posed for photos alongside her husband, 43, and their 12-year-old daughter Arabella.
Meanwhile, Zuckerberg, 39, also looked equally stylish as he reunited with his wife, Priscilla Chan, also 39.
The Facebook founder wore a tuxedo embroidered with images of dragonflies, while Chan wore a matching black and gold dress.
The Harvard graduate completed her look with smoky eyeshadow and a bold red lip.
Meanwhile, Bill Gates, 68, was seen heading to the event, where Rihanna, 36, performed a 90-minute set on stage.
But international elites were not the only ones invited to this exclusive event.
Some local Indian celebrities were also present at the billionaire's party, including Bollywood stars Ajay Devgn and Akshay Kumar.
The festivities are expected to extend through Sunday, and the weekend's events are expected to be just as lavish.
Anant Ambani and Radhika Merchant will tie the knot later this year.