Coleen Rooney and her footballer husband Wayne welcomed their second child to their family on Tuesday morning.
The pair has named the newborn Klay Anthony, Contactmusic reported.
Shortly after giving the birth, Coleen tweeted: "At 2.11am our Beautiful Son .... Klay Anthony Rooney entered the world."
"He weighed 7Ib 11.1/2 oz We're all so happy and doing well. X (sic)," she wrote.
Coleen, who revealed over the weekend that she had passed her due date, was rumoured to have been taken to hospital on Saturday.
Kai and Coleen are already parents to three-year-old Kai.