The 32-year-old star shared the news from Dubai, where she is enjoying a New Year break, posting: “When a hatrick just wont do !!! #babynumber4.”

Crouch also posted on Twitter along with a shot of Clancy wearing a bikini with her hands on her baby bump.

He wrote: “Baby no4 on the way. I blame @OfficialClancy for looking like this.”

The couple already have three children – daughters Sophia, seven, and Liberty, three, and 11-month-old son Johnny.

Clancy had previously said her third child, who was born a year ago on Thursday, would be her last.

The Britain’s Next Top Model star said: “I think this will be the last baby I have, so I just want to embrace it.”

Clancy and 37-year-old Crouch had Johnny on 3 January last year and posted a picture of the footballer, still in his Stoke City kit, cradling the newborn.

The couple married in 2011 after a five-year relationship and she has reportedly praised Crouch for being a good father.

In 2017 she was quoted as saying: “He’s such a capable dad, he’s unbelievable. Since day one, he’s been so hands-on – it’s like [our children] have got two mums.

“He’s better than me. I have such horrific pregnancies. I’m so ill for nine months, throw up every day, so sick. But my births are amazing.”

Clancy shot to fame when she was runner-up in Britain’s Next Top Model and won the 2013 series of Strictly Come Dancing.