Published Sunday, 06 April 2014
The Atomic Kitten singer gave birth to a baby girl on Friday night.
Her fiance George Kay tweeted his bride-to-be on Saturday, writing: "thank you for bringing my beautiful daughter into this world last night! You are both amazing."
The star has yet to reveal the tot's name.
Katona is already mum to Lilly and Molly from her marriage to former Westlife star Brian McFadden, and Heidi and Max from her previous relationship with Mark Croft.