The actress also shared a photo of her newborn with a snap of their hand gripped tightly around Kellie's finger in a heart-warming photo.
Kellie is yet to pop anything on her own socials and it seems she is taking the moment to celebrate the latest addition to her little family.
She previously told the publication how she was left in floods of tears and couldn't stop crying after finding out that she was pregnant with their third child.
They had struggled in the lead-up to the pregnancy and in the early days, but once she found out she was pregnant she said she "couldn't believe" what she was seeing.
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