The former Girls Aloud singer and husband Justin Scott have announced a new arrival is on the way to join son Bobby, who turns two in September.
Kimberley, 34, shared the news with Hello! magazine, saying the couple are "over the moon" to be expanding their family .
They added the baby's sex will be kept a secret, with Justin saying: "Although the doctors could tell already if we were expecting a girl or a boy, we asked them not to reveal it. We'd like this baby to be our Christmas surprise."
Kimberley's made no secret of how much she loves motherhood, frequently gushing about little Bobby in interviews.
She told the Express last year: "Because I'm very close to my two nephews, I was under no illusions of what it was going to be like. I knew what I was letting myself in for. But however many times people tell you, you can't imagine how much you're going to love them when they're actually there. It does take over you – it's crazy. Every single day you find more love for them, it just keeps growing."
Kimberley also told Mother & Baby magazine she thinks she's been a "good role model" to other new mums, as she didn't regain her pre-baby figure immediately.
"It's good for other women to see that not everybody just snaps back straight away," she said. "I think I'm a positive role model to other women who might find comfort in the fact that I did not spring back into shape."
Kimberley and former Triple 8 popstar Justin's happy baby news comes just months after they married in an idyllic Barbados ceremony, watched by friends including Cheryl Fernandez-Versini and Nicola Roberts.
They've been together 14 years.
In October last year, Kimberley admitted the couple were planning on having a second child, as she comes from a big family and enjoyed growing up with siblings.
Congrats to Kimberly and Justin!
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