Liberty X and Big Reunion star Michelle gave birth to her second child on 28 February, but kept his name a secret until today.
Michelle tweeted that she and husband Hugh Hanley are every inch the "proud parents" to son Aaron Jay, affectionately nicknamed AJ.
"We are so in love with him ..." she added.
Personal trainer Hugh was the one who announced the birth via Twitter on 28 February, saying: "Our little man arrived this morning at 8.49am. My beautiful wife @wonderwomanshel was amazing, I'm so proud of her. Both are doing great."
Michelle later added: "Thank you all so much for your well wishes.. Mine & @hughhanley little boy is snuggled into us and we are the happiness parents ever.
"Thank u2 every1 at the knutsford suite #watfordhospital @WestHertsNHS & dr Sheridan 4 looking after us all. Time 2go home #familycomplete."
It's the second child for Michelle and Hugh, who are also parents to daughter Faith, born January 2012.
Since bringing little AJ home, Michelle has been keeping fans updated on his progress – and her busy schedule.
She tweeted on 4 March: "3 hourly feed cycle .. = 3 hourly spit up cycle = 3 hourly outfit change cycle = no sleep for mummy lol #allworthit."
Two days later, she added: "Averaging on 2.5-3.5 hours of broken sleep a night-All you mums out there r amazing-How we just do it & get on with it is beyond me! #tired."
Michelle was diagnosed with having the BRCA2 gene in 2012. In November of the same year, she underwent a double mastectomy, as the gene can mean a high chance of developing breast and ovarian cancer. Michelle has also decided to have her ovaries removed.
She told Reveal in December: "No matter how daunting having my ovaries out is - and it is - it's necessary."
More celebrities who have welcomed babies in 2014 in pictures:
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