The singer embraced the festive season with her husband Brandon Blackstock and his two children, Savannah and Seth.
The photo sees Kelly, who is expecting her first child with Brandon, wrapped in a large red ribbon while holding onto their family dog.
Dressed in red tartan pyjamas, the 31-year-old awkwardly looks across at Santa Claus, who sits down on a chair drinking a glass of milk.
Meanwhile, Brandon, Savannah and Seth are also wrapped in the ribbon with Kelly, and they all stand in front of the fireplace, which is adorned with family photos. Taking to Twitter, Kelly simply said: "Merry Christmas from the Blackstocks!"
Kelly will have a new addition to the family when she gives birth next year, and she's already confessed that she thinks she'll be having a girl!
The 2002 American Idol winner, who has released her first ever Christmas album, Wrapped In Red, tied the knot to Brandon on 20 October in a romantic ceremony held at Blackberry Farm in Walland, Tennessee.
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Watch Kelly's music video for 'Underneath the Tree' below: