Kimberley Walsh Announces She's Pregnant!
The former Girls Aloud singer will be the second of the group to have a baby...
"Justin and I are so happy to let you all know we are having a baby!!! Couldn't wait to share our lovely news with you all," she tweeted this afternoon.
Her former bandmates were quick to take to the social networking site and congratulate the star - although they admitted they had known for some time now.
"FINALLY, I thought at one point I was going to burst," Cheryl Cole wrote alongside numerous emojis of hearts, babies and crying faces.
Meanwhile Nicole Roberts added: "Secrets out!! I am BURSTING with love! Kimberley & Justin are having a baby! I am so happy and so literally beside myself with excitement!!!"
Kimberley and boyfriend Justin - who used to be in the boyband Triple 8 - have been dating for nearly a decade.
Earlier this month Nadine Coyle became the first Girls Aloud star to have a baby.
At the time, she wrote on Twitter: "I am overjoyed to let you know our little girl is here. She is amazing! I love being a mammy & will fill you all in soon. Love Nadine Xx"