U.S. reality TV star Kim Zolciak has given birth to twins. The Real Housewives Of Atlanta castmember took to her Instagram.com account on Monday (25Nov13) to announce the arrival of a baby boy and girl, her third and fourth child with football player Kroy Biermann. Zolciak writes, "We are officially the 'Biermann Bunch' now! Guess what?!!! The twins have arrived! We welcomed first a baby girl and second a handsome little boy! They are both healthy and Kroy and I are so thankful!!" Zolciak and Biermann married in 2011 and are also parents to two children together, two-year-old KJ and 12-month-old Kash. The 35 year old also has two older daughters, 16-year-old Brielle and 12-year-old Ariana, from a previous marriage who were adopted by Biermann in July (13).