Dana White told TMZ Sports Kim Kardashian vs. Amanda Nunes would be the biggest fight in the history of MMA ... leading Nunes to ask Kim K -- WANNA FIGHT?!
Clearly, Amanda is just joking around ... as she would clearly murder any non-fighter -- male or female -- who stepped foot in the Octagon against her.
But, that didn't stop Nunes from hitting Kim on social media ... and c'mon, you'd pay good money to watch that fight!