'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.