Catherine, who plays barmaid Eva Price in the ITV1 soap, is pregnant with hers and fiancé Tom Pitfield's first child and they recently discovered the sex at a scan.
Confirming the happy news about their "lad" on Twitter, Catherine tweeted: "It's actually getting difficult to put my shoes on... God help me at 8 months #biglad."
Actress Catherine announced in August that she and Tom were expecting a baby together.
Adding to the excitement, just one week later the happy couple also revealed they had got engaged!
Since then, Catherine's bump has been growing fast and she has been pictured showing it off loud and proud. Last month, Catherine sizzled in a red maternity gown at the TV Choice Awards before later being spotted covering it up while on the Corrie set!
Earlier this week, Catherine took a selfie of her bump while wearing a very comfy pair of tartan pyjama bottoms.
She has since told fans on Twitter that he is a very active baby too! Catherine said: "Wide awake... Baby is having some kind of all night womb-rave. Beltin."
Celebrities who have announced pregnancies in 2014:
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