Maddy and Kris announced last October they had split, after daring on-and-off for four years.
Shortly after, the male model began dating personal trainer Sarah and the couple are now expecting their first child.
Taking to Instagram on Tuesday to announce the happy news, Kris wrote: 'We’re having a baby ❤️❤️
'My amazing woman @thisisme.sb is giving us the greatest gift on earth, a growing family. I couldn’t be more proud of you baby, and I know Ethan and Harley are so excited to be big brothers ❤️ #baby #parents #happy#whatayear'
Ethan is Kris' son from his relationship with Danii Minogue and Harley is the name of Kris and Sarah's dog.
Congratulations to Sarah and Kris!
