The doting new mum and husband Dan Baldwin welcomed their third child together on Monday (29 September), announcing his birth via Twitter late last night.
A thrilled Holly - who is on maternity leave from This Morning - phoned into the ITV show from her hospital bed today, where she said: "Everybody is absolutely fine. We're just in that lovely baby bubble and it's just wonderful!"
The blonde TV presenter revealed she'd opted for a water birth, which had gone well.
"I started having contractions at about nine in the morning and they lasted all day, and then he arrived about 7.20pm. It was very different from the other two, I had a water birth, which I'd never thought of doing. That was amazing. And he was a really big boy! 8lbs 12oz!
"He's so delicious. I just can't stop looking at him. He's perfect."
Holly said that she and Dan had been thinking about the name Chester for some while... although it hasn't gone down too well with their son Harry.
"The kids just left to go to school but they came in to meet their little brother today. Harry walked in and I said, 'His name is Chester.' He went, 'No. I want to call him Frank.' So it might be Frank!"
Holly and Dan are also parents to daughter Belle.
Stars who welcomed babies in 2014!
Copyright: Rex Features WENN/Matthew Taylor/Daniel Deme/Josiah True/Matthre Taylor/Joe
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!