The actress – who plays Eva Price in the ITV soap – was pictured enjoying an evening out with fiancé Tom Pitfield and co-star Antony Cotton on Sunday, 25 January.
Catherine looked gorgeous in a stretchy wine-coloured dress, teamed with black tights, ankle boots and a cosy winter coat.
The 31-year-old announced her pregnancy back in August, and later confirmed that her first child will be a little boy. Aww!
Catherine tweeted in October: "It's actually getting difficult to put my shoes on... God help me at 8 months #biglad."
And in a double whammy of good news, Catherine and Tom also celebrated an engagement in 2014!
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