The Girls Aloud singer shared her wonderful news with fans on Twitter and said she "couldn't wait" to let the world know.
Kimberley, 32, has been dating boyfriend Justin Scott for over ten years and has been flooded with congratulatory messages from her loyal fan, all of whom are delighted to hear that there's another Baby Aloud on the way.
Kimberley Walsh and Justin Scott
Meanwhile Cheryl Cole revealed her relief at her bandmate sharing the news, joking that she had been ready to "burst" with excitement at trying to keep it a secret.
We wonder if Kimberley will name Chezza, her self-confessed BFF, as the bubba's godmother?
Massive congratulations to Kimberley and Justin from everyone on the Closer Online team.