Zoe, and her rugby player boyfriend Paul Doran Jones, are due in September.
Speaking to Hello! magazine the pair revealed their excitement for their new baby and Zoe explained how she's come to terms with her changing body shape.
'It's everything I could have hoped for times about ten,' Heart FM DJ, Zoe said. 'I'm watching my body change daily, which is weird and wonderful. I've never felt more beautiful, actually.
'I'm not thinking about the birth, I'm not thinking about getting the nursery ready, I'm literally just thinking, "Today is such a magical day".'
Despite the pair being loved up now, it sounds like Paul had to put in a bit of work to secure Zoe's affections. The rugby player explained Zoe played a little hard to get to start with.
'She shunned me for the first few attempts but I finally got a date just over a year ago,' confesses Paul.
'And the rest is history. We haven't looked back. For me, I knew the minute I first saw her, but she just needed a little nudge.'
Confident in her boyfriend's ability as a supportive partner Zoe explains that she's sure he'll be a great dad, saying 'I know he'll be a complete constant when the baby comes. I am in safe hands with this one. He's one of the good eggs.'
Paul, who has a three-year-old daughter Isla from a previous relationship, credits his little girl with helping them make the decision to become parents. And it looks like Zoe is a natural with children as Paul went on to explain Isla and Zoe's touching relationship.
'My daughter's the best thing that's happened to me – we're so close,' Paul said. 'One of the amazing things about Zoe is how close she is with Isla, too. Seeing Zoe around my daughter just confirmed everything for me.'