The 39-year-old was spotted at a recent event wearing a necklace bearing the name 'Milo', leading many fans to believe this is the moniker she and husband Patrick Kielty have chosen for their first child.
Earlier this year, Cat took to social media to share the happy news that she had welcomed her first son with fans.
Beyond delighted to announce the birth of our baby boy last week. All doing well & we couldn't be happier...— Cat Deeley (@catdeeley) January 19, 2016
3 really is the magic number!
The So You Think You Can Dance presenter's baby boy was born a week earlier, but the couple held off from revealing his name at the time.
Cat and Patrick revealed they were becoming a family of three in September 2015, after three years of marriage.
Speaking of her pregnancy cravings, Cat told E!: 'I'm all actually fine. I'm not too bad at all. I'm looking forward though to this week being over so I don't have to wear high heels for a long time.'
Cat Deeley showed off her gorgeous baby bump at the Emmy Awards ceremony in September
Among the well-wishers congratulating Cat and Patrick were Ant & Dec, who tweeted: 'Congratulations @catdeeley and @PatricKielty on your new arrival. Lots of love to the three of you xx'
The new mummy replied to the comedy duo, writing: 'Thank you darling! We are completely in love.... Can't wait for you to meet him xxxxx'
Thank you darling! We are completely in love.... Can't wait for you to meet him xxxxx https://t.co/SpV34ZqaC4— Cat Deeley (@catdeeley) January 20, 2016
Cat and Patrick tied the knot in September 2012, in a private ceremony in Rome with just six family members and friends each.
They were friends before becoming an item since 2002, when they met presenting Fame Academy together.
The couple's relationship was made public in March 2012, and their wedding only a few months later - in September of the same year - was considered 'unexpected' by the press.
Commenting on their engagement, Patrick said: 'People wait, because they need to get to know each other first. Cat and I were friends for such a long time, a good 10 years, so we already knew each other very well'.
Cat and Patrick were very good at keeping the ceremony a secret, which worked because they kept the guest list small.
Patrick also revealed why the couple didn't want a big wedding: 'In our business, we get to go to a lot of functions in big rooms with round tables and gold-painted chairs. A lot of people, when they have a wedding, want all that. But that type of thing would've just seemed like work to us. We didn't want to get married, we wanted to be married. There's a difference.'
Congratulations to the new parents!