Kim Zolciak Biermann is giving her behind the deep freeze.

No, really, she is.

The reality star stripped down to her skivvies to get a spa treatment on her backside. The treatment involved freezing her buttocks.

"Venus Freeze at Magnolia Med Spa this morning! Gotta keep my s--- tight! #BeachBoundTomorrow #LastWekBeforeIStartFilming #StarbucksInHandOfCourse," she captioned a snap of the treatment that she posted to Instagram.

Kim is no stranger to getting a procedure from time to time, although she's been insistent that she's never had a nose job, only a tummy tuck, boob job and lip fillers. She's been criticized in the past for allegedly doctoring social media photos, too.

She has said that she doesn't doctor any of her selfies. Last week, she posted a video to both Instagram and Snapchat where she flaunted her body in a white bikini. "You like my little bathing suit?" she asked in the video, pushing her cleavage toward the camera.

"No need to photoshop!," she captioned the video.

No need to photoshop! Follow me on Snapchat KimZBiermann 😘😘

A video posted by Kim Zolciak-Biermann (@kimzolciakbiermann) on

In November, she blasted several gossip sites for their coverage of her body.

"So, um, I just have to comment again on how much the Daily Mail and TMZ are full of s--- and just show you guys what I really look like," she said on Instagram at the time. "I'm not a bulls---er, I don't have to f------ bulls--- so f--- you."

Thankfully this week it looks like Kim was able to chill out!