Niki Taylor, the model, and her husband, former NASCAR driver Burney Lamar, welcomed a baby boy, Rex Harrison, this week, PEOPLE.com reports. The baby joins 2 1/2-year-old sister Ciel and twin brothers Jake and Hunter, who are 16. The couple married in 2006 and announced their pregnancy in December 2010.
Read more on celebrity pregnancies on our Celebrity BumpWatch page.
(image via: http://celebritybabies.people.com/)