'Real Housewife' Kim Zolciak-Biermann sexes up her vow renewals by going topless in her wedding dress

It's "til death do us part" for Kim Zolciak Biermann and her husband, but when it comes to bras, she's more than happy to part ways.

The "Real Housewives of Atlanta" alum donned a full-skirted wedding gown for her vow renewal ceremony in Turks & Caicos this week, but after the official event, she stripped down the top to reveal her bare chest. The 38-year-old mom covered her breasts with her long hair, but the image is still quite racy.

In the sultry shot, Kim is wading in the clear water, still wearing her gown -- but she's pulled down the bodice for a sexed-up look. After taking a peek, check out pics from earlier in the day to see what her dress looked like before she hit the ocean.

In addition to her bridal gown, Kim wore several other white dresses during the envy-worthy escape. Other photos show her in a simple white maxi while walking by the water with husband Kroy Biermann and riding a horse. She also wore an ultra-skimpy white number that displayed her legs under a sheer fabric.

Joining Kim and Kroy were their children -- Brielle, Arianna, Kaia, Kane, Kash and Kroy Jr. Kroy is the legal father to Brielle and Ariana, who are Kim's from a previous marriage.

Kroy and Kim met back in 2010 while competing on "Dancing with the Stars." They wed in 2011.