Announcing her baby joy over the weekend, Imogen took to Twitter and Instagram to tell fans she is set to become a mum again.
To reveal her exciting news, the mum-of-one shared two pictures in a collage - one showing the scan of her unborn baby and another of herself showing her two-year-old daughter Ariana the pictures from her scan.
Alongside her photo, she said: "Guess what?! I'm going to pop! This little Madam can't wait to be a big sister in November! She's going to be the best #novemberbaby."
Unsurprisingly, Imogen was inundated with congratulations and the former Big Brother star told fans she had been overwhelmed by their messages.
A few hours after announcing her pregnancy, she tweeted: "WOW! Thank you so much to all you wonderful people for the congrats. I'm an emotional wreck with all your lovely messages."
WOW! Thank you so much to all you wonderful people for the congrats. I'm an emotional wreck with all your lovely messages— Imogen Thomas (@Imogen_Thomas) May 25, 2015
Imogen's unborn child will be her second, with her and her long-term partner Adam Horsley set to welcome their new addition later this year.
The couple are already parents to daughter Ariana - who arrived back in February 2013 - and after having their little girl, Imogen had hinted she wanted to add more children to her brood.
In November, Imogen admitted she was feeling "so broody".
She said: "I don't want to scare Adam away... but, I want to start trying in January for the New Year."
It looks like she got her wish! Since becoming a mum two years ago, Imogen has loved every minute.
"My life has changed for the better," she admitted. "I wouldn't swap it for the world."
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