In their first photoshoot together, the five-month pregnant singer reveals her 'surprise' at being the first of the girlband to have a baby.
Denying there was any mystery about Jason being the baby's father, Derry born Nadine says: "I think we just forgot to tell everyone we were together.
"When I said I was pregnant I thought, 'Why's everyone wondering who it is? Then I remembered, 'Oh yes, that's right. I do stuff on TV and people are confused. So this clears it up!"
In her first indepth chat since Girls Aloud split up after a decade, Nadine gave hope to fans by revealing how she still believed the girls would reunite one day. "I didn't want it to end - but the sequins, the wings and a bump wouldn't have been a good look! "
I loved the reunion and hopefully one day we will get back together to do something else."
Talking about her bandmates, she added: "I think I was the least likely to be the first to have a baby, it would always come up. A couple of the other girls had wanted babies for a long time but I said no way… It was definitely a shock, but I was really, really happy."
"I've never felt excitement like this in my whole life. Knowing we're having a baby takes it to another level," says ex American Footballer Jason.
In the exclusive interview in this week's magazine Nadine reveals all about her relationship, her pregnancy cravings, how the couple keep their long-distance relationship alive and plans to bring up their baby.
Read the full interview in HELLO! out now.