Tom Brady, Travis Scott Hang W/ Dana White At Power Slap 6, Feet Away From Insane KOs

The Super Bowl may not be the most star-studded sporting event in Vegas these next few days ... 'cause Dana White's Power Slap 6 Friday night in Sin City had some of the biggest stars in the world, including Tom Brady and Travis Scott!

And we've got a bunch of pics and video from the event.

It wasn't just TB 12 and La Flame in the building ... Charles Barkley, Pat McAfee, Johnny Manziel, Taylor Lewan, Bert Kreischer, IShowSpeed, billionaire Michael Rubin, and a bunch of others were also there for the festivities -- and judging by the stars, it slapped.

Friday night marked the first event White held outside of the UFC's own Apex center ... going down at the Durango Resort, marking a big step forward for the young org.

We talked to Dana backstage during the event (while he wasn't rubbing shoulders with Tom and Travis) ... and asked him about the night.

"This is the first time ever selling tickets. We sold VIP packages. It was a good night," White said with a big smile on his face.

As for the action on the mats, the main event, Manny Muniz vs. Christopher Thomas, was a barn burner ... and the scrap DW was most looking forward to.

"Muniz has never been knocked out, and Chris Thomas knocks everybody out," White told us.

Manny ended up beating Chris by knockout in the 5th round.

We also talked to UFC legend Chuck Liddell at the event ... and while it's clear he likes watching, it doesn't sound like he's going to be coming out of retirement to compete at Power Slap 7.

Jax Taylor was also in the house ... and the former "Vanderpump Rules" star told us how he became a slap-fighting fan.

Taylor says he initially saw highlights on Instagram, so he messaged Power Slap ... which led to an invite from Dana.