The former TOWIE star, 29, lives with Rio in Bromley and reportedly gave birth on Friday, December 18.
Neither Kate nor Rio have yet announced the news on their social media, reports Mirror Online.
Kate has been the stepmother of Lorenz, 13, Tate, 11, and Tia, 9, since she married the former footballer in 2019, but is the couple’s first child together.
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Kate first informed her stepchildren that they were expecting in June.
The lovebirds decided to record the healthy moment when they told Lorenz, Tate and Tia that they were about to be joined by a brand new brother.
Along with the video, the mom-to-be wrote, “The crazy house is about to get a little crazier. Every time I watch this it makes me cry, best Baby Ferdy reaction, we are all so glad to meet you. ”
The first-time mum took her fans on her pregnancy journey by keeping them updated on her social media.
Just ten days ago, Kate revealed that she was left bedridden after painfully tearing the muscles in her stomach.
During a question-and-answer session on Instagram, she explained that the injury happened about six weeks ago and required her to rest for three weeks, which she said was difficult for her. she.
In response to a fan asking how she is feeling in the later stages of her pregnancy, Kate typed next to a snap of her burgeoning bump, “I surprisingly haven’t been feeling too bad the past few weeks. I am tired but I have been feeling a lot better. ”
Kate shared, “I tore my stomach muscles about 6 weeks ago and rested for 3 weeks. I found it really difficult… and my mind was everywhere! ”
She continued, “So now I’m just happy and grateful that I can be walking around and messing around the house. ”
After another follower asked her if she had exercised during her pregnancy, she said, “I have been training for the majority of my pregnancy: Pilates and light gym exercises.
“But after I tore my muscles I was advised to rest so I did that for 3 weeks and just take it easy and walk every day because I don’t want to damage anything more.
“It is advisable to stay active so I try to keep moving as much as possible. ”
Kate also gave fans a preview of what she’s taking with her for the toddler’s arrival in a social media post.
And proving that she’s got it covered, alongside the adorable babysitters and tiny diapers, the Essex native has filled her tote with snacks for herself and Rio.
Share a photo of inflated bags for Instagram Kate joked, “Snacks are the most important thing in the hospital bag, right?” ”
The Only Way Is Essex alumni explained that she had stayed up all night sorting her kit, saying, “I spent one of those nights where I’m up all night doing random stuff. Looking at baby clothes and packing snacks.
Along with him and her bags full of crisps – carefully labeled – Kate also filled a third snack bag with cookies and candy.
She also showed off a fluffy faux fur babygro with bunny ears, personalized with the name “Baby Ferdy”.