Kourtney Kardashian, Travis Barker Make Out At UFC 264 - TMZ

The celebs are flocking to T-Mobile Arena to check out Conor McGregor and Dustin Poirier's big trilogy fight ... and Kourtney Kardashian and Travis Barker simply couldn't wait for the main event to provide a TON of action!!!

As we previously reported, all the biggest names in Hollywood are hitting up UFC 264 -- with President Donald Trump, Justin Bieber, Megan Fox, MGK, Kourt and Travis, Kevin Durant and more showing up for the bout.

KK and TB decided to put on a show as everyone got into fight mode -- straight-up making out as the camera panned to their area.

It's a star-studded night in Sin City 🤩#UFC264 pic.twitter.com/ur6YGjYqxf
— UFC (@ufc) July 11, 2021 @ufc

Cleveland Browns superstars Baker Mayfield, Austin Hooper and David Njoku have also shown face ... with the QB sitting right next to UFC legend Chuck Liddell -- but yeah, they did NOT follow in Kourt's footsteps.

#45 has yet to make his big arrival, but it's only a matter of time -- there are only a few fights left on the main card (BTW -- the whole night has been nothing but fireworks).

And of course, controversially -- Addison Rae is sitting feet away from the Octagon ... making her big debut as a "journalist."

Adblock test (Why?)