Katie had been on holiday with her family, including new husband Kieran Hayler, when she started feeling unwell a week ago and attended hospital.
The location of the holiday, somewhere in Europe, has not yet been disclosed, but Katie has hinted that the name 'Riviera' is a nod to the exotic location - meaning either South of France, or Italy (probably not Torquay).
Plans had provisionally been made for her to give birth on Wednesday, but this date had to be brought forward as doctors continued to monitor the unborn baby's vital signs.
Although Katie has now been discharged from hospital, baby Jett - born at 32 weeks - is still there, where his parents have been able to visit him.