After the fight, Harrison sent a message to the MMA world ... saying, "If anyone thinks they can step to me they can come get in the cage. From now on I'm the baddest woman, in this room and in any room."
Of course, only 1 person can be the baddest ... and if it's Kayla, that means it's not the current (widely accepted) G.W.O.A.T., Nunes -- the UFC's bantamweight and featherweight champ.
But was Harrison -- who is also a 2x Olympic gold medalist -- calling out Nunes?! Kayla says definitely not.