Meanwhile Sharlene shared a picture of herself to her account showcasing her growing bump.
'I can't believe I'm half way through my pregnancy! Am I the only one who has been super slack on getting bump pics?? I feel like I am!' she wrote alongside the image.
The couple announced they were expecting back in July in an interview with Daily Telegraph.
'I felt I was going to hit 40 and I wanted another opportunity as a dad' Grant said.
'The trouble with being divorced is you're a father part-time. I hate that,' Grant said of his two daughters he shares with ex wife Candice Alley.
'I knew I wanted more children but only with a committed person who was going to be a life partner.'