The pair, who have been married since 2007, are now proud parents of a baby boy, named Charlie Kingston.
Heynatz announced the news on Instagram along with a photo of their newborn’s tiny little foot.
She captioned the image with, "Thrilled to share the great news that we welcomed our beautiful little boy Charlie Kingston on Monday afternoon. We have been in a state of complete & absolute joy since. He's nothing short of spectacular!"
She added the hashtag 'proud parents'.