Kim Zolciak Flashes Her Butt at Spa Freezing Appointment: ‘Gotta Keep This S–t Tight’

Just your average Monday? Kim Zolciak stripped down for a spa freezing treatment on February 1 — and shared a photo from the appointment via Instagram.

The Don’t Be Tardy star, 37, rested on her stomach for the procedure. She kept her face hidden, but showed off her butt in a black thong.

“Venus Freeze at Magnolia Med Spa this morning! Gotta keep my s–t tight!” Zolciak captioned the revealing snapshot. “#BeachBoundTomorrow #LastWeekBeforeIStartFilming #StarBucksInHandOfCourse.” See the photo and read more at Us Weekly…