Kirk shared the wonderful news on social media on 16th February, excitedly tweeting to his 1.28 million followers to tell them 'he's here!'.
The former TOWIE star also revealed his new baby's name, telling friends, fans and family that he and Danielle had chosen the name 'Harry Michael Norcross' for their bouncing baby boy.
When the time finally came, the 28 year old shared a sweet selfie of him and his little man, being careful to only expose a few tiny fingers and an adorable little ear to the camera.
And he's here!!!! Harry Michael Norcross ð‘¶ð¼ð’ pic.twitter.com/dUgC3LySDo— Kirk Norcross (@kirk_official) February 16, 2017
Fans rushed to congratulate the Essex boy, with one Twitter follower saying, 'congratulations 😍 enjoy this special time 😊👶🏼❤️' and another adding, 'congratulations you gorgeous man, you! Hope mums doing well and you all get some sleep now 😆😘'.
Model Danielle also tweeted the happy news and explained why Kirk's picture of their new baby didn't give much away.
After giving birth the 25 year old tweeted to over 1,000 followers revealing her joy at meeting her new son. Calling Harry a 'beautiful little human' she also said she couldn't have 'done it' without boyfriend Kirk.
She wrote, 'Can not believe I just gave birth to the most beautiful little human! Couldn't begin to think how I'd have done it with out his daddy'.
Can not believe I just gave birth to the most beautiful little human! Couldn't begin to think how I'd have done it with out his daddy ð— Danielle Louise Carr (@DaniLouise_psnl) February 16, 2017
Shortly afterwards she took to Twitter once again to tell fans that she wouldn't be sharing any pictures of her newborn until after some quality family time.
Danielle explained, 'Before strangers on social media see little one I want his family to meet him. Nothing personal'.
Kirk was even keen to keep fans in the loop in the build up to the birth, tweeting his excitement earlier in the day to say little Harry was on his way.
He's on his waaaaaay!!!! ð¼ð‘¶ð¼— Kirk Norcross (@kirk_official) February 16, 2017
Once at the hospital Kirk also gave followers an insight into the couple's birthing journey with a tired looking selfie, telling them it was a 'waiting game now'.
The waiting game now!!! ð‘¶ð¼ð¼ he's on his way! pic.twitter.com/yyIcix4G61— Kirk Norcross (@kirk_official) February 16, 2017
Kirk also has a daughter called Violet with previous partner Holli Willis, who is just over a year old.
Congratulations to the new parents!