Floyd Mayweather and Conor McGregor, move over.... there's a new superfight on the way.
The matchup? Cris Cyborg -- arguably the greatest female UFC fighter ever -- against Cecilia Braekhus -- arguably the greatest female boxer ever.
If you like combat sports, you're well aware Cyborg's a bad ass ... but so is Braekhus. She's undefeated at 34-0 and has been the undisputed welterweight champ since 2014.
TMZ Sports talked to Cecilia -- who'll be the 1st woman to headline an HBO boxing card on December 8th -- Thursday night after the Lakers game and she gave us the 411 on the dream fight with Cyborg.