The Coronation Street actress, 31, wore a stunning red gown when she attended a 'Vegas Fight Night' boxing themed fundraiser in aid of local charities in Manchester.
Arriving at the Hilton Manchester Deansgate with fiancé Thomas Pitfield, Catherine oozed glamour despite being heavily pregnant.
In a floor-length dress with shamelessly plunging neckline, the actress showed no signs of the tiredness normally associated with the third trimester of pregnancy.
In fact, she radiated health.
Alongside her personal trainer beau, who looked dapper in an all-black tux, the pair made a super gorgeous couple.
Currently on maternity leave from her role as Eva Price in the ITV soap, Catherine was clearly excited about her date night.
Before heading out, she tweeted: "Looking forward to #VegasFightNight with him indoors @TP_PTfitness tonight!! Wooop! Gloves are comin off!!"
Even though Catherine looks ready to pop, the fitness fan has been making sure she keeps up her exercise regime.
She recently shared a picture of herself working out with her social media followers.
Alongside a photo of herself in the gym, she joked: "God loves a trier... #waddle."
She is one of a number of celebrities who proudly admit they still worked out during pregnancy, including Jersey Shore's Snooki and singer Kelly Rowland.
In August 2014, Catherine and Tom announced they were expecting their first child, and later revealed she is carrying a boy.
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