Jeff Bezos and Lauren Sanchez are gearing up to have a wedding that rivals Princess Diana and Prince Charles.’

Jeff Bezos and Lauren Sanchez are battling for the “wedding of the century” title.

The couple is said to be planning a wedding so opulent, it will rival the legendary 1981 nuptials of Princess Diana and Prince Charles – leaving Hollywood elites clawing at the door to get in, RadarOnline.com can reveal.

Lauren’s older brother, Paul, said on Thursday: “I think it’s gonna be like a Princess Di thing. Just huge and fun, and just a blast.”

Jeff, 61, and Lauren, 55, have already sent out their wedding invitations – with plans to marry aboard their $500million yacht, Koru, off the coast of Venice in June.

Hollywood A-listers are said to be clamoring for invites to the upcoming star-studded event.

However, during a conversation with TMZ, Paul remained tight-lipped about the details.

He said: “We don’t have any specifics yet, like the exact location or anything.”

Paul still said he was “thrilled beyond belief,” noting: “It’s gonna be an amazing event. It’s gonna be star-studded and fun.”

Ivanka Trump and Jared Kushner have already confirmed their attendance, while Karlie Kloss and Joshua Kushner have also received invites.

Other potential celebrity guests include Donald TrumpKris JennerKim KardashianOprah WinfreyJewel, and Eva Longoria, along with members of her all-female Blue Origin space crew – such as Katy Perry and Gayle King.

Sources have also said Barry Diller and Diane von Furstenberg, film producer Brian Grazer, and models Brooks Nader and Camila Morrone have received invitations.

As the wedding date nears, reports indicate a buzz among A-listers scrambling to land an invite to the star-studded affair.

A source previously told us: “People are calling everyone they know. Old friends, ex-flames, assistants of assistants – just trying to figure out who got an invite. And more importantly, who didn’t.”

A second added: “One Oscar winner was caught asking a tech billionaire if he could plus-one him. That’s how high the stakes are.”

Another Hollywood insider joked the Amazon CEO was “not just throwing a wedding — he’s throwing a summit.”

They added: “It’s like Davos meets the Met Gala… on a yacht.”

The sources noted non-disclosure agreements are expected to be sent out to those lucky enough to receive an invitation to the Italian soiree.

When it comes to a suitable wedding gift, Paul mentioned he has “no idea” what to give Lauren and Jeff – but believes he and other guests may be asked to donate to their favorite charity instead.

He explained: “I talk to my sister three or four times a week but she hasn’t mentioned much about the wedding.

“They’re so busy, you know, the launch is coming up in three weeks. And I’ll be there for that, that’s gonna be a blast.”

Lauren, along with other prominent women, will join the 11th human flight of Blue Origin’s New Shepard program on April 14, marking the first all-female crew since 1963.

Paul teased: “We’ll see what happens after that.”