The beautiful actress was super chic in head-to-toe black as she walked the red carpet in Manchester on Monday evening (15 September).
She's really nailed maternity style, right?!
LOVING the red heels too!
And clearly Catherine, 30, had a rather fantastic night as she tweeted afterwards: "Bloody loved #thefullmonty @PalaceAndOpera tonight!!! Awesome show guys well done @RupertHill and cast! Cried laughing!"
Catherine is expecting her first child with her personal trainer fiancé Tom Pitfield.
The happy couple announced their engagement at the end of August, just a week after revealing their first child was on the way.
Catherine tweeted at the time: "I have something to tell you all… So pleased to tell you all I'm going to be Mrs Pitfield. I said YES! Love you [Tom]. So happy, what a year!"
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