The Coronation Street actress, 37, looked stunning in a figure-hugging black frock which clung to her enviably toned body.
Wearing a beautiful peacock green mask, she attended Rochdale's Masquerade Ball fundraiser with her 16-year-old daughter Emily Cunliffe - who could easily have passed as her sister!
Ahead of the event, Kym tweeted: "Looking forward to tonight's charity ball @rochdalecouncil raising money for @SpringhillHosp and @WHAG8 pleasure to be a part of tonight x."
The Corrie star, who plays barmaid Michelle Connor, has four children - David, 19, and Emily, 16, with ex-boyfriend Dave Cunliffe and Polly, two, with actor husband Jamie Lomas.
Kym and Jamie lost their son Archie Jay Lomas from complications of being born 18 weeks premature in February 2009.
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