KATE Ferdinand said it was impossible to hide her pregnancy from husband Rio's teenage kids after they began to spot clues.
The former reality star - who is currently expecting her second baby with footballer Rio - said her stepson Tate, 14, cottoned on that she was pregnant around four weeks ago.
The youngster pulled Kate, 31, up on it and asked her if she was having a baby, but the Essex star denied it.
Kate has since explained that she was cautious about telling the kids too early following her devastating miscarriage last July.
"Tate sat us down about four weeks before at the dinner table, I think Rio was at the World Cup, and he said, 'I've got an announcement to make. I know you're pregnant," Kate revealed on the .
"I was flustered and at this stage I still didn't want to tell the kids just in case.
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"So I went, 'You don't know I'm pregnant, because I'm not pregnant.' I feel like from that moment on he's been on me."
Her eagle-eyed stepkids Tate, Lorenz, 16, and 12-year-old Tia quickly noticed changes in Kate's behaviour - including less frequent gym sessions, no alcohol and different food habits.
Kate said she was also began to wear oversized clothes to hide her growing bump.
"The kids know the symptoms from the last pregnancy. I go off my fish and certain foods," she continued.
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"Every time I eat a jacket potato, because I'm obsessed with jacket potatoes in pregnancy, I get glances across the room. Anyway, the kids know and we're all really excited.
"I think a lot of you knew because I've been getting a lot of messages saying, 'Definitely pregnant, she's not going to the gym as much,' and you're right. But I didn't want to announce it too early.
"It's a bit of a worry with what happened last time with the miscarriage."
The former The Only Way Is Essex star took to her Instagram to confirm the news on Sunday morning.
The star showed - who already shares young son Cree, two, with Rio, 44, showed off her baby bump in a sweet video posted to Instagram.
She could be seen walking away from the camera before turning, and pulling her coat away to reveal her bump.
Looking chic, Kate wore a long black dress, which she paired with knee-high boots and a designer bag over her shoulder.
The expectant mum pulled her blonde locks back into a neat up-do, as she glammed up with make-up.
"We've been praying for you," Kate captioned the post, as her fans rushed to congratulate her.
It comes after Kate revealed she suffered a heartbreaking miscarriage last year, leaving her "devastated".
Kate, who welcomed baby son Cree with Rio in 2020, posted a black and white snap of herself in a hospital gown.
She revealed she had suffered a "devastating" miscarriage with her second child in an emotional caption to her Instagram following.
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"So much to say, but somehow I can’t find the words. Absolutely devastated and heartbroken."
"Couldn’t be more grateful for the hugs I got from my big(er) babies [Lorenz, Tate and Tia] coming through the door when we arrived home," she concluded.