Supermodel Niki Taylor and husband Burney Lamar welcomed a baby boy on Wednesday, according to People.

The coupled named their baby Rex Harrison -- who weighed 7 lbs., 5 ozs.

Rex is Taylor's second child with Lamar, 31, a former NASCAR driver. The couple has a daughter, Ciel Taylor Lamar, born two years ago.

Niki, 36, has two older sons, twins Jake and Hunter, 16, from a previous marriage to footballer Matt Martinez.