Jeff Bezos threw a huge party at his $23 million mansion in Washington, DC, on Saturday night.

The bash was an after-party for members of the invite-only Alfalfa Club, whose members include George W. Bush, Dick Cheney, and Warren Buffett.

Attendees to Bezos' party included political figures like Ivanka Trump and Mitt Romney, the actor Ben Stiller, and the Microsoft cofounder Bill Gates.

The party came after a challenging week for Bezos that saw the public release of a forensic report concluding he was most likely hacked by a phone number belonging to Saudi Crown Prince Mohammed bin Salman.

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Jeff Bezos' party spirit hasn't been dented by his rough week.

The billionaire Amazon CEO threw a party at his mansion in Washington, DC, on Saturday night attended by celebrities, White House officials, and fellow tech billionaires.

The event was an after-party for the Alfalfa Club dinner, an elite black-tie event that takes place annually on the last Saturday of January. The Alfalfa Club's only event is the dinner, and it's an invite-only organization whose members mostly consist of former US presidents such as George W. Bush, high-ranking political figures, and business figures such as Bezos. Its members also wear medals to signal they belong to the club.

Former Federal Reserve Chair Alan Greenspan in 2010 wearing an Alfalfa Club medal. The Washington Post / Contributor

Bezos' 27,000-foot mansion cost $23 million, and it sits in Washington's Kalorama neighborhood, where the Obamas also have their post-White House residence.

A huge roster of celebrities and political figures were snapped entering the house, as documented by the Daily Mail.

Ivanka Trump and Jared Kushner were seen entering Bezos' house, though CNN reports they skipped the Alfalfa Club dinner.

The White House adviser Kellyanne Conway was seen entering, as was Republican Sen. Mitt Romney.

According to Politico, Romney was the keynote speaker at the dinner, and he brought the actor Ben Stiller as his guest. Stiller was later seen heading into Bezos' party.

The actor Ben Stiller. Juan Naharro Gimenez/ Getty Images

Also in attendance were the Microsoft cofounder Bill Gates, JPMorgan Chase CEO Jamie Dimon, and Goldman Sachs CEO David Solomon.

Politico reported that Bezos' girlfriend, the news anchor Lauren Sanchez, was spotted in attendance at the after-party.

The party came after a turbulent week for Bezos. A forensic reported cited by UN investigators revealed that Bezos' phone appeared to be hacked in 2018 by a phone number belonging to Saudi Crown Prince Mohammed bin Salman.

On Friday, just one day before the party, The Wall Street Journal reported that federal prosecutors had evidence that Sanchez passed on intimate pictures of Bezos to her brother, Michael, who then leaked them to the National Enquirer.

Last year Bezos published an extraordinary blog post saying the Enquirer had attempted to blackmail him with the photos after he ordered an investigation into how the paper also obtained texts between him and Sanchez.