The former Girls Aloud star was snapped arriving at the Specsavers' Spectacle Wearer Of The Year Awards before taking to the stage and singing to guests.
Kimberley was joined by Ben Forster, who won ITV's Superstar in 2012, at the event and the pair performed a duet together.
Showing off her post-baby figure, Kimberley - who gave birth to Bobby on 4 September - wore a black maxi dress that was clinched in at the waist.
The star styled her ombre hair in loose waves and added a pop of colour to her outfit with bright red nail varnish.
Before heading on to the stage, Kimberley donned a pair of specs - naturally - and posed for a selfie, which she then shared on Twitter.
Commenting on the snap, the mum-of-one said: "Final specs selfie! Getting ready to perform @specsavers #SWOTY."
What a yummy mummy!
Meanwhile, Kimberley revealed yesterday that her Girls Aloud bandmates have been spoiling Bobby rotten.
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Copyright: WENN Lexi Jones