Katie, 35, shared a new picture of Jett this morning (5 March) on Twitter, and it shows him curled up and sleeping on her bed.
The tot, who is almost seven months old, is wearing a cute circus print babygro in the snap and is cleverly disguising his face with a blanket!
Mum-of-four Katie gave birth to Jett prematurely while on holiday with husband Kieran in France last August.
The couple had to stay abroad for several weeks, as they couldn't fly home until Jett's lungs had matured, and, since then, Katie has tended to hide him away from the public glare.
Although her other children - Harvey, Junior and Princess - used to feature heavily in Katie's reality shows, she decided they should take a step back from the limelight in recent years.
Posting this sweet snap online, Katie tweeted: "My gorgeous little baby boy morning sleep."
Celebrities who have announced pregnancies in 2014:
Copyright: WENN Lexie Appleby/Future Image/Bridow/Instagram