These days, Kim Zolciak-Biermann is starring on TV, taking PDA-packed pics with husband Kroy Biermann, and defending her thigh gap. But 20 years ago, she was just trying to get through high school like any other teen. Kim posted a vintage pic of her 16-year-old self on Instagram Thursday that showed a more focused and subdued side to the mother and wife than we're used to seeing on Don't Be Tardy. "I was so studious at 16! #HowAboutThatScrunchieThough," Kim wrote.

However, that blond hair and those big eyes are unmistakably Kim's. And if you ask us, we think Kim is totally killing it with that scrunchie. She must think so too because she continues to rock a similar 'do to this day.

Clearly, big hair has always been Kim's signature. Listen to Kim, and it can be yours, too.