Packin' on the PDA!
As the cameras panned the audience to focus on some of the celebrities that had come to watch the fight, Kardashian and Barker went in for a tongue-tastic series of kisses, shocking the announcer, Jon Anik.
"Travis Barker and Kourtney Kardashian must know the camera is on them," Anik commented, as the power couple continued to smooch for all to see.
It's no surprise that the handsy couple had no problem showing off on live television in Las Vegas. Kardashian and Barker are no strangers to PDA, and seem to enjoy the attention that comes from the more romantic side of their highly publicized relationship.
The reality star and the musician regularly post steamy photos of their make out sessions and other public displays of affection on social media, whether they are at the beach, enjoying the outdoors on a hike, or killing the time with a kiss or two in the recording studio.
As reported by Page Six, there are even whispers that wedding bells might soon be ringing for the reality star and her Blink-182 drummer beau.
Kardashian sparked rumors of an impending engagement when she was seen at Disneyland with Barker wearing white, bridal themed Minnie Mouse ears.
The couple wandered the "happiest place on earth" on July 5 with their children including Barker's kids — Landon, 17, and Alabama, 15 — and two of Kardashian's little ones — Mason, 11, and Reign, 6.
The wedding themed Disney hat came complete with a veil, and if their passionate kiss at UFC 264 is anything to go by, there just might be an engagement in the near future.