But, Amanda's GF, Nina Ansaroff, is right in Joanna's wheelhouse -- in fact, they both train at the American Top Team gym.

Nina says she's not intimidated by Joanna's impressive undefeated MMA record -- and tells TMZ Sports straight-up, "I can beat her." Nina has to climb the ranks before she gets a chance to back up her talk -- but she's convinced it's just a matter of time before she fights for the title.

The simplest approach to avoid this problem is to continue to use the Facebook app but not use the in-app browser.

Jessica Danielle Andrews (born December 29, 1983) is an American country music singer.

He stayed incognito with a dark blue beanie pulled over his head.

His girlfriend, 25, mixed prints for a colorful ensemble.

Amanda Nunes says there's no doubt she's the best female fighter in the world -- not Joanna Jedrzejczyk -- and she's 100% confident her girlfriend can beat the strawweight champ.

Amanda and Joanna are dominating the women's division in the UFC -- but likely won't fight each other because they're in different weight classes.