These guys might be the least famous people at Saturday’s fight at T-Mobile Arena. (Steve Marcus/Reuters)

As the mega-fight between Floyd Mayweather and Conor McGregor finally neared, things got started with the singing of both the Irish and U.S. national anthems. Kicking things off was Dublin-born singer Imelda May, who belted out a respectable edition of “Amhran na bhFiann.”

Up next came pop star Demi Lovato, who, dressed in a white low-cut dress, did much better than Jamie Foxx in 2015 when he sang the “Star Spangled Banner” before Mayweather fought Manny Pacquiao. At least the Internet thought so.

Stealing the show, however, was Mayweather’s face, or rather what the undefeated boxer wore on his face — a full ski mask. Unsurprisingly, this brought out a slew of jokes on social media, the most popular of which had to do with Mayweather’s tax troubles and the lopsided matchup between the now 50-0 boxer and the one with no professional experience.

Among the first A-listers to arrive to the event on Saturday were actors Don Cheadle, William H. Macy, Jay Pharoah and Bruce Willis, who was spotted at the MGM Grand casino Friday night playing craps.

Mike Tyson (Joe Camporeale/USA TODAY Sports)

LeBron James awaits the fight. (Isaac Brekken/AP)

Ozzy and Sharon Osbourne  (Isaac Brekken/AP)

William H. Macy (Gabe Ginsberg/Getty Images for Showtime)

Don Cheadle. (David Becker/Getty Images for Showtime)

Charlize Theron. (Christian Petersen/Getty Images)

And if you thought paying $100 for a pay-per-view meant you could escape ads, think again. Also making an appearance on the red carpet was the Sasquatch mascot of jerky brand Jack Link’s. He was shown directly after Cheadle, Macy, Pharoah and Willis.

“If this isn’t the cast of a heist movie tomorrow, Hollywood has failed us all,” Esquire’s Luke O’Neil commented on Twitter.

Showing up in time for the night’s penultimate fight between Gervonta Davis and Francisco Fronseca were Diddy, Paul Pierce, Ray Lewis, Mike TysonLeBron James, Ozzy and Sharon Osbourne, Charlize Theron and Jamie Foxx and Olivia Munn, who arrived on the red carpet together, which immediately spurred romantic rumors.

Also reportedly in the building were Ty Lue, Nick Jonas, Nick Cannon, Jeff Gordon, Danny Garcia, Amir Khan, Rajon Rondo and Cedric the Entertainer.

More famous faces from arrived later, including Alex Rodriguez and Jennifer Lopez, Robert Kraft, Paul Pierce and Isaiah Thomas.

Unlike Mayweather’s 2015 fight against Manny Pacquiao, when Las Vegas’s McCarran International Airport was overrun by private jets, the airport capped the amount of jets allowed on the tarmac, according to TMZ.

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