The couple became pregnant on their first round of IVF in June, after nearly three years of trying to conceive.
“I still can’t quite believe it,” Ola told Hello! in an interview announcing their news. “I don’t think it’s properly sunk in.”
Sharing the news on Instagram, Ola wrote: “I can’t actually believe I’m writing this but I’m so happy to say James and I are expecting a baby. We are both so excited to add a little munchkin into our family.
“Getting pregnant wasn’t straightforward for us and it’s been a long and emotional journey but we were one of the lucky ones. My heart goes out to all those couples still trying for that magical moment and I’ll always keep a prayer in my heart for you.”
The dance professionals joked that their baby, due in March 2020, was “dancing” during their 12-week scan, adding: “I’m not sure if it was a cha-cha or a jive, but it was definitely dancing.”
“Getting pregnant wasn’t straightforward for us and it’s been a long and emotional journey.”
Despite how much they’ve done in their careers, dad-to-be James said finding out they were expecting was their “biggest achievement ever”.
The couple had previously been open about their fertility struggles, with Ola Hello magazine back in February 2019: “I guess I just thought, like most women, that I could choose when the time was right for me; that I could have my career and then have a baby when it felt right.
“But for us it just hasn’t happened like that.”
To read the full interview, pick up a copy of HELLO!, out Monday 2 September.