The woman you're looking at above is not a professional swimsuit model -- she's a badass MMA fighter, and she tells TMZ Sports she's out to prove she's more than a pretty face.

If Rachael Ostovich looks familiar ... it's 'cause she went viral on social media (for obvious reasons) after appearing on UFC's 'The Ultimate Fighter' in July.

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We spoke with the 27-year-old about her newfound popularity ... and she says she wants to make a name for her career in the cage, not her beautiful looks.

"I do believe that you can be a feminine woman and still fight MMA," Ostovich says. "I just feel like just do you. And, this was always me. It was never a fake thing for me."

We asked Rachael if she'd ever venture into the modeling and acting world ... and she says she's 100-percent focused on her career as a fighter ... for now.