The WAG took to Twitter this morning to announce the couple's three year old son Kai will be getting a little brother.
She tweeted: "Absolutely loved seeing our baby on the scan yesterday!!! We decided to find out the sex...... It's a ..... BOY!! So exciting @WayneRooney"
Coleen revealed she and Wayne were expecting again in October.
Announcing the news at the time, she said: "Me Wayne and Kai are thrilled that we are expecting a new addition to our family around May time."
Who's the mumma? Peaches Geldof Who's the daddy? Thomas Cohen Baby ETA: April 2013 Interesting fact: Peaches and Thomas are expecting a boy and are planning to name him Phaedra.
Who's the mumma? Fearne Cotton Who's the daddy? Jesse Wood Baby ETA: Early 2013 Interesting fact: Fearne had to deny she knew the sex of her baby when she referred to her bump as 'her'.
Who's the mumma? Imogen Thomas Who's the daddy? Adam Horsley Baby ETA: February 2013 Interesting fact: Imogen and her boyf had been dating 10 months when the star fell pregnant