Jamie, 29, and Rebekah, 34, are already parents to their 19-month-old daughter Sofia. Jamie also has a daughter from a previous relationship - Ella, five - while Rebekah has two other children - son Taylor, six, and daughter Megan, 11.
Speaking to OK! magazine, the couple announced the gender of the baby they're expecting in January, saying it was 'the biggest secret' they'd ever had to keep.
'I'm so glad it's finally out,' said Rebekah. 'Megs had a face on because she wanted another sister, but I said to her, "You've already got one sister so this boy will even things out".'
'Taylor wanted a brother, so when we got home, he was like, "What is it?!" He saw the blue cake and he was like, "Oh my goodness, it's a boy!"' she added.
'He was winding Megs up, it was so funny. The first Vardy boy is a big deal for Jamie – it’s his first little boy.'
'He’ll have a lot to live up to. I think Jamie secretly hoped for a boy, but ultimately we just want a healthy baby.'
The news of the pregancy came just two months after the pair tied the knot in a lavish ceremony in Peckforton Castle, in May this year.
It was confirmed by Rebekah's spokesman, who said in a statement to Mirror Online: 'I am delighted to confirm that Becky is expecting her and Jamie's second child together.'
The soon-to-be mum of four has been spotted showing off her blossoming baby bump on the beach, while on holiday with Jamie and her family in Portugal. An onlooker who spotted the loved-up couple told the Sun: 'You could tell they were newlyweds.
Rebekah during an appearance on Good Morning Britain
'They were cuddling up and kissing. It was lovely to see.'
Rebekah has spoken openly about her desire to add to her brood, telling Hello magazine earlier this year: 'I'd like another boy. I'm not sure how Jamie will feel. But as long as we're happy, and the kids are happy, that's our goal.
'We're securing their future. That's the happy ending for us.'
Rebekah's three children - Sofia, Taylor and Megan
She added of her new hubby: 'He has all the patience in the world. He's so chilled out.'
Rebekah and Leicester City striker Jamie met while Rebekah was a nightclub promotions worker. She was tasked with organising a birthday party for a VIP client, and later discovered it was for the football star.
The couple got married in May, in a star-studded ceremony at Peckforton Castle in Cheshire, with their daughter Sofia as flower girl.
Talking about her husband previously, Rebekah revealed: 'He's my soul mate. Someone I trust implicitly and who has my back constantly.'