Niki Taylor has given birth to another beautiful baby!
The 36-year-old supermodel and her husband, former NASCAR driver Burney Lamar, 31, welcomed son Rex Harrison on Wednesday at 11:03 a.m., her rep confirms to Us Weekly.
The newborn weighed 7 lbs., 5 oz. and measured in at 19 inches long. He joins older sister Ciel, 2, and twin bothers Jake and Hunter, 16 (with Taylor's ex-husband Matt Martinez).
"I think Ciel's going to be fine," Taylor -- who wed Lamar in La Jolla, Calif. in December 2006 -- told Us. "She's going to be a great big sis!"