Published Thursday, 12 September 2013
The Atomic Kitten star is expecting her first child with her fiance George Kay, who she became engaged to in April.
Katona shared her happy news with talk show host Alan Titchmarsh in an interview due to air on Thursday.
She announced: "We're just found out we're having a baby - I'm three months pregnant. I have food and a baby in my belly, the best friends in the world, a great job and I'm a very lucky girl. I'm very grateful."
The 33-year-old is already mum to daughters Molly, 11, and 10-year-old Lilly-Sue with her first husband, singer Brian McFadden, as well as a Heidi, six, and Max, five, with her second husband, Mark Croft.
The new arrival will be personal trainer Kay's first child.