At age 17, Zolciak had an affair with a Windsor Locks police sergeant who had interviewed her as a material witness in a Criminal investigation, initially resulting in the officer's firing. The termination was later changed to a 45-day suspension without pay. She graduated from East Catholic High School in Manchester, Connecticut in 1996, and studied nursing at the University of Connecticut. At 21, she moved to Atlanta, Georgia, where her parents had moved, and eventually settled in the suburb of Johns Creek.
Zolciak has two daughters from previous relationships, Brielle (born February 25, 1997) and Ariana (born October 17, 2001). She was married to Daniel Toce from 2001 to 2003.
In 2008 Zolciak began work on a country music album. She released a debut single, the dance track "Tardy for the Party," in 2009, followed by a remix EP the following year.
Zolciak said in March 2010 that she is bisexual and that she and DJ Tracy Young were in a romantic relationship.
In May 2010, Zolciak met Atlanta Falcons football player Kroy Biermann at the charity event Dancing with Atlanta Stars. Their meeting was later shown on season three of The Real Housewives of Atlanta. The couple wed at their Roswell, Georgia, home on November 11, 2011. They have four children together: Kroy Jagger "KJ" (born May 31, 2011), Kash Kade (born August 15, 2012), and twins Kaia Rose and Kane Ren (born November 25, 2013).
In March 2013, Biermann filed to adopt Zolciak's daughters. In July 2013, the adoption became final and the girls subsequently changed their last names to become Brielle Biermann and Ariana Biermann.
Zolciak-Biermann competed on the 21st season of the dancing competition show Dancing with the Stars. She was paired with professional Dancer Tony Dovolani. She withdrew in September 2015, three weeks into the competition, because of a transient ischemic attack, which prevented her from air travel.
In May 2016, Zolciak-Biermann launched a line of skin-care products called Kashmere Kollection. Later in 2016, Zolciak began working on a perfume, also called Kashmere.
