Kim Zolciak Biermann and Brielle Biermann on May 6, 2016. Credit: Paras Griffin/Getty Images

Mom approves! Kim Zolciak discussed her daughter Brielle Biermann’s lip injections in a new interview with Us Weekly at the launch of her skincare line, Kashmere, in Atlanta on Friday, May 6.

Last November, Biermann, 19, revealed that she gets lip fillers from Dr. Simon Ourian, the same doctor behind Kylie Jenner’s plump pout. “My lips are my biggest insecurity and I’m so happy w my results now!” she wrote on Instagram at the time.

Although some of the reality star's fans bashed her decision, the teen had full support from her mother.

“She bothered me for five years about her lips,” Zolciak, 37, tells Us. “She was like, ‘I hate my lips, I hate my lips.’ So I’m like, then go fix them! You only go around this planet once. If it makes her happy, so be it.”

The Real Housewives of Atlanta alum added, “She is a leader, not a follower. Social media sucks. It’s been difficult. I try to monitor my girls’ accounts, but Brielle is 19. But she can handle it better. She has confidence.”

Earlier in the day, Zolciak celebrated her upcoming 38th birthday (on May 19) with her closest friends and family at a fun-filled house party. She documented the get-together on Snapchat, but caused quite the stir with one clip that showed her daughter sipping from a red plastic cup.

“Shots! Shots! Shots!” the guests shouted as they toasted the birthday girl, while Biermann twerked for the camera.

Some reports speculated that Biermann was breaking the law by underage drinking, but Zolciak’s rep tells Us, “There was no alcohol in [her cup]. They were in her house cheering and toasting her mom’s birthday.”

Can't get enough of Us? Sign up now for the Us Weekly newsletter packed with the latest celeb news, hot pics and more!