She was born on April 3, 1986 and is 31 years old.
She wrote: "So Happy!". Had scan & all checks are fine....
Coleen - who is married to Everton and England star Wayne, 31 - confirmed the news after previously firing back at speculation suggestion she is expecting again. Baby number 4 is on its ways'.
Hubby Wayne was quick to retweet and fans also send their congrats.
"I go to the gym around three times a week, I love Pilates but as it's the summer holidays I'm focusing on spending time with the kids and enjoying being with them so I haven't been in a few weeks", she smiled. "I'm happy with the boys and I've got and plenty of friends and family who I can always treat to a nice dress".
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"I can imagine having a girl".
Her husband retweeted the message from his own account.
Wayne and Coleen now have three boys: Kai Wayne Rooney, born in November 2009; Klay Anthony Rooney, born in May 2013; and Kit Joseph Rooney, born in January 2016.
The mother of three was promptly flooded with congratulatory messages, including one follower who hoped the new arrival is a girl, tweeting: "Congratulations to you @ColeenRoo & @WayneRooney What ideal news!".
We can't wait to find out what the sex is!
Awwww! Congratulations on the awesome news, guys.