Teigen, 31, also posed for a photo with her daughter, and used a cut-out off Legend's face as a stand-in.
"When your husband is in Paris but you gotta get your Santa on," the model joked.
"Savage," Legend, 37, replied.
The Lip Sync Battle host also shared a photo to Instagram of Luna reaching for Santa's glasses.
"I love the holidays 😭," she wrote.
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