The 35-year-old was rushed to hospital during her European holiday with husband Kieran Hayler, 25, two weeks ago, when her amniotic sack burst.
She had been staying there under observation ever since, when doctors noticed an infection was affecting her unborn baby’s heart rate.
The mother-of-three (now four) gave birth to 5lb 2oz son Jett Riviera last week.
Her other children- Harvey, 11, as well as Junior, 8, and 6-year-old Princess who are currently in Australia with dad Peter Andre, have not met their new brother yet.
Speaking of her new addition, Katie gushed:
‘Jett is really strong, he’s doing really well.
‘I absolutely love him. Kieran is already proving to be an amazing dad. He is so hands on.’
‘Harvey drew me a card that says, “To Mummy, well done for having a baby! Love Harvey”. I will always treasure it.’
But it could be up to three weeks before all of her four children are reunited, as Jett will remain in hospital under observation.
‘I’d prefer him to keep getting stronger here so that we can take him straight home when we’re back in England,’ Katie explained.
Congratulations guys!