The Westlife singer has been wanting to add to his family ever since he spent three weeks away from Jodi and their son Koa while filming I'm A Celebrity... Get Me Out Of Here last year.
Kian, 34, shared the news by posting an adorable video of two-year-old Koa along with the caption: "Koa has some big news to share with you all !! Listen carefully now!"
In the short but very sweet clip Koa looks into the camera and says:
"Mummy's got a baby in her belly and I'm going to be a big brother."
Jodi told Hello! magazine that after Kian was crowned the winner of the 2013 series of I'm A Celebrity last December, the very first thing he did was tell her that he wanted another baby.
"We were in the canteen just after he'd emerged from the jungle," she said. "He looked at me and said, 'We've got to have another baby!' I was stunned – but I'm all for it. I'd like a little girl next."
Kian added: "Being away from my family made me look at our lives. I was on top of the world and the only other time I'd felt like this was when we had Koa.
"I'd love to have a mini Jodi. I'm so lucky to have her and Koa and if we can give him a brother or sister, why wait?"
Congratulations Kian and Jodi!
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