Kim Zolciak is looking thinner than ever in her latest Instagram photo. Kim Zolciak is looking thinner than ever in her latest Instagram photo. Kim Zolciak Credits Slim Post-Baby To Husband Kroy Biermann Just over a year after welcoming twins with husband Kroy Biermann, of the Atlanta Falcons, the former Real Housewives of Atlanta star is back to size and preparing for Thursday's Christmas holiday.