Not this time! Kim Zolciak claims that she hasn't had any lip injections recently — but Andy Cohen isn't buying it. He teased the reality star about her appearance during Watch What Happens Live on Wednesday, December 14. Watch their debate go down in the video above!

"Is it possible that your lips have gotten bigger since I last saw you?" Cohen, 48, asked.

Zolciak, 38, insisted that she hasn't "done them in a while," but Cohen persisted. "Yes, you have. Sweetie, you need to stop," he said.

Sticking to her guns, Zolciak replied: "No, I haven’t. It’s Voluma, it lasts two years!"

The Don't Be Tardy star was joined on the show by her husband, Kroy Biermann, and her eldest daughter, Brielle. In September, Zolciak told Cohen that she totally supports Brielle, 19, wanting to plump her lips.

"I've heard her complain about her lips since she came out of the womb, honestly. And she said, 'I'm doing it.' I was like, 'I'm going to take you to the best,'" she said on WWHL at the time. The mother-daughter duo said that they sometimes get their lips done every three to four months when they are in L.A.

The Real Housewives of Atlanta alum is used to fighting back against critics. On Wednesday, one caller asked Zolciak if she thought her cursing would have a negative impact on her six children.

"No, KJ is in school, he’s in kindergarten, and he knows kind of when [he's] able to cuss and not," Zolciak said of her 5-year-old. "[I haven't had] an issue at all. In fact, he’s one of the best behaved and his teacher said he sets a perfect example every day."

Watch Zolciak on WWHL in the video above.

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