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."