Brielle Biermann on Her Insecurities: "I Thought to Be Beautiful You Had to Have Full Lips"

Say what you want about Kim Zolciak-Biermann and Brielle Biermann's lips — the Don't Be Tardy beauties don't care. They are thrilled about their luscious, overly-plump pouts.

Kim has slammed internet trolls, adding that she loves her "large and in charge" lips. Similarly, Brielle has offered up pre-injection photos as "proof" of why she's happier with a larger pout. And in a recent interview with The Lookbook, the 22-year-old gave us more insight into why she started getting lip injections in the first place. (Watch the video above to see.)

"I was always insecure about [my lips], especially from when I started high school," Brielle explained. "All my friends had beautiful, full lips. They looked so good. I thought to be beautiful you had to have full lips because everybody that I thought was pretty had huge lips."

After telling her mom for "years and years and years" that she desperately wanted injections, Brielle finally got her first dose "right when I turned 18—right when I graduated [high school], actually." She continued, "I went straight to L.A. and my mom took me to the best and that was that."

Watch the video above to hear Brielle tell the story — and to see Brielle and Kim give an injection-free lip plumping tutorial using only makeup.