Leonardo DiCaprio dropped $95,000 for a Mongolian expedition at the star-studded amfAR charity auction Wednesday night.
After a relaxed but persistent bidding war, DiCaprio edged out the competition and secured the trip, which will be led by world renowned adventure explorer Johan Ernst Nilson.
All proceeds from the gala – which included a pricey piece by Andy Warhol and a Timothy White photograph of Elizabeth Taylor – will benefit amfAr, the international foundation for AIDS research.
In addition to being surrounded by models, the actor was seated between Harvey Weinstein (who was being honored at the event) and Uma Thurman. Robert de Niro was just a couple seats away, and Jay-Z also made an appearance.
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During his speech, Weinstein received a round of applause from the audience after taking time to praise DiCaprio's latest work in The Revenant.
"As an Academy member, you're not allowed to endorse somebody else when they're up for an Academy Award and if you do, there's a good chance you'll lose your membership," Weinstein said. "But I have to tell you Leo DiCaprio is so amazing in The Revenant."
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Also in attendance at the event was Nicky Hilton Rothschild, who debuted her baby bump for the first time after announcing she's expecting her first child with husband James Rothschild.
"I am so excited. I can't wait to be an aunt – my sister is thrilled," Paris Hilton, 34, told PEOPLE.