Katie, 36, gave birth to their second child together - and her fifth - a little more than three weeks ago but had so far shied away from sharing photos of the tot publicly.
The former glamour model hasn't even confirmed her daughter's name, however she has now given fans their first glimpse.
Last night (27 August), Katie uploaded a snap to her You Gossip site, which shows her little bundle asleep in a pink and very frilly crib.
Commenting on the picture, the mum-of-five said: "My sleeping beauty, love her x."
Fans were delighted to finally catch sight of her, especially after Katie fooled them recently by posting a model shot of a sleeping newborn.
"Gorgeous, love the bassinet, can just see baby. Such tiny but cute little one xxxx," one follower has commented. Another simply said: "Aww bless her xx."
At the beginning of May, Katie discovered she was unexpectedly six months pregnant. The surprise came just nine months after the birth of hers and Kieran's first child together, Jett.
Days later, Katie announced that she was to divorce Kieran after discovering he had been cheating on her with her now-ex best friend, Jane Pountney.
However, a lot has happened since then and Katie has decided to work at her marriage with Kieran, who has been getting help for a 'sex addiction'.
Celebrities who have given birth in 2014:
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