"What an honor to kick off the holiday season with the First Family," Carey tweeted along with a photo of President Obama greeting her daughter Monroe on stage.
In the snapshot, Nick Cannon's wife carries Monroe on her hip. Obama, 52, flashes a big smile while leaning in to say hello, reported Us magazine.
Carey wore a custom-designed short white Herve L Leroux dress and Monroe styled a gray winter coat and white tights.
Obama was joined by his wife, First Lady Michelle Obama, and daughters Malia, 15, and Sasha, 12.