"'I'm besotted with the baby and really enjoying motherhood," the new mum told Closer magazine. The TV presenter revealed she has impressively shed her baby weight without stepping foot inside of a gym.
Cat opened up about motherhood
"People keep asking me if I've been hitting the gym, but I haven't," she said. "I think breastfeeding is key and it's worked well for me. Add to that running around after a new baby and you don't need to work out."
Cat opened up about how she took to becoming a mum for the first time, saying: "You have to listen to advice, then it's all about learning on the job. Nothing can prepare you for motherhood."
The star also took to pregnancy very naturally. "I'm 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. There's been a lots of heels this week," the 38-year-old told E! News when asked about her pregnancy cravings at the time.
Cat first showed off her bump at the Emmy Awards
Cat and comedian Patrick welcomed their son in January but the pair are yet to be publicly reveal the tot's name or share any photos on social media.
The new mum revealed the good news via Twitter, saying: "Beyond delighted to announce the birth of our baby boy last week. All doing well & we couldn't be happier... 3 really is the magic number!"
The couple secretly tied the knot in 2012
The So You Think You Can Dance host, who first showed off her growing bump at the Emmy Awards in September 2015, announced the news earlier the same month.
"Exciting news.... Paddy and I are so happy to be expecting our first child in the Spring..... Lucky us," the TV presenter tweeted. Patrick, 44, confirmed the news and expressed his joy on Loose Women, telling the panellists: "Yes. There is a little baby on the way. In the spring. Very exciting, God love it. It's going to have this as a father!"
The bouncing baby boy is the first child for Cat and her comedian husband, who secretly tied the knot in Rome in 2012.
The happy couple first met when they presented talent show Fame Academy together in 2002. The pair stepped out as a couple a decade later in March 2012 and married at St Isidore's College Church in Rome in September of the same year.