Kim Zolciak spent her 40th birthday on a romantic getaway with her husband.
Zolciak, whose birthday was Saturday, posted pictures of herself on the beach with Biermann. The star wore a white bikini with a floral print.
"Walking on sunshine," she captioned the slideshow, adding a sun emoji.
Other photos show Biermann's swimsuit had a thong bottom. The television personality said in a post Sunday that she was enjoying her trip.
Zolciak's daughter Brielle Biermann was among those to wish the star a happy birthday.
"HAPPY BIRTHDAY to the most beautiful person i know inside and out. I pray to be half the woman/mom/wife/friend you are one day!" the 21-year-old wrote.
She apologized to co-star NeNe Leakes in April following their showdown at "The Real Housewives of Atlanta" Season 10 reunion.